Machine Shop Policies And Procedures

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Machine Shop Policies and ProceduresThe College of Engineering & Computational Sciences machine shop consists of a full-service shop thatprovides machining, assembly and fabrication services in support of research projects andinstructional laboratories for CECS students, staff, and faculty working on CECS projects.Location & Hours of OperationBrown Hall W1309:00 am – 6:00 pmMonday – FridayShop ManagerJohn Jezek303-273-3668jjezek@mines.edu1

Table of Contents1. Duties of Shop Manager2. Shop Use Policy3. Safety Equipment4. General Shop Safety Rules5. Guidelines for Medical Emergencies6. Tool Safety, Warnings, CautionA. Hand ToolsB. Angle GrinderC. Circular SawD. Combo SanderE. Cut Off SawF. Drill PressG. General Power ToolH. Horizontal Band SawI. LatheJ. MillK. Miter SawL. Plasma CutterM. Portable DrillN. Recipro SawO. Safety Rules for Working with Solvents and ResinsP. Welding2

Duties of Machine Shop Manager Teach proper shop usage and safety at a minimum on a once-a-month basisEnsure that all tools are in good working conditionReplace and fix broken tools and equipmentProvide assistance to employees and studentsKeep the Machine Shop in order and safeEnforce the rules of the Machine ShopMaintain an active list of students approved for Machine Shop usage.3

Shop Use PolicyAll undergraduate and graduate students enrolled in CECS courses, and CECS faculty and staff areeligible to work in the shop. All shop users must do the following before using the shop: Attend Basic Shop Safety and Operating Procedures conducted by the Shop Manager beforeshop usage. Take and pass Safety Exam given by Shop Manager Sign an agreement document to abide by the rules and regulations of this document.All CECS students, faculty, and staff must do the following when using the shop: Sign in and out of shop Follow all safety rules and procedures while in the machine shop, including the use of protectiveequipment as required. Always work with another approved user or supervisor in the Machine Shop.o Student use of tools or equipment is to be supervised by Shop Manager or Faculty Membero If Shop Manager or Faculty Member is not present, at least two students must be in theshop at all times during the use of tools or equipment. Use of the shop must still beapproved by Shop Manager or trained proxy, approved by Shop Manager and DepartmentHead. Shop Manager or trained proxy is responsible for the safety of the students while inthe Machine Shop. If working in the Machine Shop without Shop Manager, users must makesure the door is locked when they leave. Never perform tasks for which they have not been trained. Always ask, and get assistance with, any new or unusual work to be done in the shop. Clean and return to proper storage place all equipment and tools used. Report any broken, damaged, or malfunctioning equipment.Regardless of user experience, the amount of prior experience required before one can use the machineshop without supervision is at the discretion of the Shop Manager.Any violation of these rules and/or unsafe or improper use of machine or tools, not listening to orfollowing instructions, or lack of judgment will result in a warning and possibly loss of shop useprivileges.Safety Equipment4

W130 Machine ShopW120 3D printer, Laser etcher, and Wood Prototype ShopLocation of Safety Equipment Fire extinguisher – W130 just inside door on west wall Telephone – W130 Inside Shop Manager office Power shut off – W130 just inside door on west wall Fire alarm – Hallway outside W130 between double doors and overhead door Personal protection equipmentSafety Glasses W130 just inside door on west wallWelding Helmets & Smock W130 on east wall of welding boothWelding Gloves W130 in cabinet drawer next to welding booth First aid kit – W130 over sink next to Shop Manager office Eye wash – W130 next to Shop Manager officeW120 next to chemical sink Chemical sink – W120 south wall Hooded vent – W120 south wallGeneral Shop Safety Rules5

Safety glasses, or appropriate goggles / face shields are required in the shop at all times,whether working or not!!Shoes must be worn in any shop area. No one wearing sandals will be allowed to enter any shoparea. The minimum footwear must cover the entire foot.Do not operate any item of equipment unless you are familiar with its operation and have beenauthorized to operate it. If you have any questions regarding the use of equipment ask the ShopManager.Do not use any equipment if it is not functioning correctly or you are unsure.Avoid excessive use of compressed air to blow dirt or chips from machinery to avoid scatteringchips. Never use compressed air guns to clean clothing, hair, or aim at another person.In case of injury, no matter how slight, you must report it to the Shop Manager.Do not attempt to remove foreign objects from the eye or body. If chemicals get in the eye(s),wash eye(s) for 15 minutes in an open flow of water before proceeding for medical treatment.Notify the Shop Manager immediately.Machines must be shut off when cleaning, repairing, or oiling.Do not wear ties, loose clothing, long sleeves, jewelry, gloves, etc. around moving or rotatingmachinery. Long hair must be tied back or covered to keep it away from moving machinery.Hand protection in the form of suitable gloves should be used for handling hot objects, glass orsharp-edged items.Wear appropriate clothing for the job (i.e. do not wear short sleeve shirts or short pants whenwelding).Do not work in the shop if tired, or in a hurry.Do not work in the shop if you are ill, have been using alcoholic beverages or under theinfluence of intoxicants.Never indulge in horseplay in the shop areas.All machines must be operated with all required guards and shields in place.A brush or gentle air blasts should be used for removing chips, shavings, etc. from the workarea. Never use your hands.Keep all body parts clear of the point of operation of machines by using special tools or devices,such as, push sticks, hooks, pliers, etc. NEVER use a rag near moving machinery.A hard hammer should not be used to strike a hardened tool or any machine part. Use a softfaced hammer.Practice cleanliness and orderliness in the shop areas. Never leave a dirty piece of equipment.Keep the floor around machines clean, dry and free from trip hazards. Do not allow chips toaccumulate.Think through the entire job before starting. Ask the Shop Manager if you are ever unsure forany reason.Before starting a machine, always check it for correct setup and always check to see if machineis clear by operating it manually, if possible.Food is allowed in the machine shop, but only in specific areas, well away from any chemicals orcontaminants.Don't rush or take chances. Don’t say you know how to do something, when you don’t. Obey allsafety rules at ALL times.6

If you have not worked with a particular material before, check the hazardous materials datasheets book for any specific precautions to be taken while working with the material. Also, askthe Shop Manager before cutting any unusual material.Heavy sanding and painting should only be done in well ventilated areas, preferably outside.Follow all appropriate precautions when working with solvents, paints, adhesives or otherchemicals. Use appropriate personal protective equipment.Check the power cords and plugs on portable tools for before using them.Personal entertainment devices with ear pieces cannot be used while using Machine ShopAlways store oily rags in an approved metal container.Obey all posted signs, warnings, posters and special instructions.7

Guidelines for Medical EmergenciesInjuries, no matter how small, must be reported to the Shop Manager immediately. Anyone who isinjured, other than small superficial cuts and abrasions, must be seen by a medical professional as soonas possible.Serious Injuries that Threaten Life or Limb.1.2.3.4.5.Notify Shop Manager!Call Campus Safety at 911 or 303-273-3333Request an ambulance, give location.Describe the nature of the problem and stay on the phone.If alone, watch for emergency personnel and guide them to the victim. Otherwise, sendsomeone.Emergencies Which Might Need Professional Care.1.2.3.4.Notify Shop Manager!Follow these procedures if you are unsure of the severity of an injury (broken vs. sprained, etc )If transportation is available, take victim to nearest hospital or care center.If transportation is not available, follow the procedures for “Serious Injuries” above.Minor Emergencies Not Requiring Professional Care.1.2.3.4.Notify Shop Manager!Provide appropriate first aid.Help victim to rest comfortably.Reassure victim and encourage them to seek additional care if necessary.8

Tool SafetyHand Tools1. Only tools that are in good condition shall be used in operations. They shall be properly cleanedafter use, and cutting tools shall be kept sharp.2. Do not carry tools in your pockets. They shall be carried in a tool kit or in hand in such a manneras to prevent injury by stabbing, dropping, pinching, and the like. Some rules for specific toolsfollow.3. Hammers: Before using a hammer, check the head for a tight fit. If the hammer has a crackedhead or a loose or cracked handle, return it to the tool crib for replacement. Hammers that haveburrs, loose chips, or signs of mushrooming shall not be used.4. Wrenches: Use the correct wrench for the job to be done. Pull rather than push on the handle ofthe wrench. Do not place extensions on wrench handles for more leverage. Use the proper sizedwrench.5. Knives: Keep your hands and the knife handles clean, dry, and free of grease. Do not placeknives on shelves or table edges where they might fall. Keep the blade in a sheath when theknife is not in use.6. Pliers: Wear eye protection when using pliers to clip wire ends. Hold the wire and pliers so thatthe ends, when snipped, are directed towards the ground.7. Impact tools, such as drift pins, wedges, and chisels, shall be kept free of mushroomed heads.8. The wooden handles of tools shall be kept free of splinters or cracks and shall be kept tight inthe tool.9. Appropriate personal protective equipment should be worn due to hazards that may beencountered while using portable power tools and hand tools.10. Floors should be kept as clean and dry as possible to prevent accidental slips with or arounddangerous hand tools.11. Hand tools are non-powered. They include anything from axes to wrenches. The greatesthazards posed by hand tools result from misuse and improper maintenance.The greatest hazards posed by hand tools result from misuse and improper maintenance.9

Tool SafetyAngle GrinderDO NOT let comfort or familiarity with product (gained from repeated use) replace strict adherence togrinder safety rules. If you use this tool unsafely or incorrectly, you can suffer serious personal injury.1. Always use safety glasses or goggles.2. Obtain permission from instructor before using the saw.3. Always use proper guard with grinding wheel. A guard protects operator from broken wheelfragments.4. Accessories must be rated for at least the speed recommended on that may affect the toolsoperation. If damaged, have the tool serviced before using. Many accidents are caused by poorlymaintained tools.SPECIFIC SAFETY RULES5. Hold tool by insulated gripping surfaces when performing an operation where the cutting tool maycontact hidden wiring or its own cord. Contact with a “live” wire will make exposed metal parts of thetool “live” and shock the operator.6. When using depressed center grinding wheels, be sure to use only fiberglass-reinforced wheels.7. Ordinary sun glasses are NOT safety glasses.9. Check the wheel carefully for cracks or damage before operation. Replace cracked or damaged wheelimmediately. Run the tool (with guard) at no load for about a minute, holding tool away from others. Ifwheel is flawed, it will likely separate during this test.10. Use only flanges specified for this tool.11. Be careful not to damage the spindle, the flange (especially the installing surface) or the lock nut.Damage to these parts could result in wheel breakage.12. NEVER use tool with wood cutting blades or other saw blades. Such blades when used on a grinderfrequently kick and cause loss of control leading to personal injury.13. Hold the tool firmly.14. Keep hands away from rotating parts.15. Make sure cord is clear of wheel. Do not wrap cord around your arm or wrist. If control of tool is lost,cord may become wrapped around you and cause personal injury.16. Make sure the wheel is not contacting the work piece before the switch is turned on.17. Before using the tool on an actual work piece, let it run for a while. Watch for vibration or wobblingthat could indicate poor installation or a poorly balanced wheel.18. Use the specified surface of the wheel to perform the grinding.19. Watch out for flying sparks. Hold the tool so that sparks fly away from you and other persons orflammable materials.20. Do not leave the tool running. Operate the tool only when hand-held.21. Do not touch the work piece immediately after operation; it may be extremely hot and could burnyour skin.23. ALWAYS wear proper apparel including long sleeve shirts, leather gloves and shop aprons to protectskin from contact with hot grindings.24. Use of this tool to grind or sand some products, paints and wood could expose user to dustcontaining hazardous substances. Use appropriate respiratory protection.10

25 Always be sure that the tool is switched off and unplugged before adjusting or checking function onthe tool.SAVE THESE INSTRUCTIONS WARNING: MISUSE or failure to follow the safety rules stated in thisinstruction manual may cause serious personal injury.CAUTION: Never actuate the shaft lock when the spindle is moving. The tool may be damaged. Press the shaftlock to prevent spindle rotation when installing or removing accessories Before plugging in the tool, always check to see that the switch actuates properly and returns to the“OFF” position when the rear of the slide switch is depressed. It should never be necessary to force the tool. The weight of the tool applies adequate pressure.Forcing and excessive pressure could cause dangerous wheel breakage. ALWAYS replace wheel if tool is dropped while grinding NEVER bang or hit grinding disc or wheel onto work. Avoid bouncing and snagging the wheel, especially when working corners, sharp edges etc. This cancause loss of control and kickback. NEVER use tool with wood cutting blades and other saw blades.Such blades when used on a grinder frequently kick and cause loss of control leading to personalinjury. After operation, always switch off the tool and wait until the wheel has come to a complete stopbefore putting the tool down.ALWAYS hold the tool firmly with one hand on housing and the other on the side handle. Turn thetool on and then apply the wheel or disc to the work piece. In general, keep the edge of the wheel ordisc at an angle of about 15 degrees to the work piece surface. During the break-in period with a newwheel, do not work the grinder in the B direction or it will cut into the work piece. Once the edge ofthe wheel has been rounded off by use, the wheel may not cut well in two directions11

Tool SafetyCircular SawSPECIFIC SAFETY RULESDO NOT let comfort or familiarity with product (gained from repeated use) replace strict adherence tocircular saw safety rules. If you use this tool unsafely or incorrectly, you can suffer serious personalinjury.Danger:1. Keep hands away from cutting area and the blade. Keep your second hand on auxiliary handle, ormotor housing. If both hands are holding the saw, they cannot be cut by the blade.2. Do not reach underneath the work piece. The guard cannot protect you from the blade below thework piece. Do not attempt to remove cut material when blade is moving. Blades coast after turn off.Wait until blade stops before grasping cut material.CAUTION:3. Adjust the cutting depth to the thickness of the work piece. Less than a full tooth of the blade teethshould be visible below the work piece.4. Never hold piece being cut in your hands or across your leg. Secure the work piece to stable platform.It is important to support the work properly to minimize body exposure, blade binding, or loss ofcontrol. A typical illustration of proper hand support, work piece support, and supply cord routing (ifapplicable).5. Hold power tool by insulated gripping surfaces when performing an operation where the cutting toolmay contact hidden wiring or its own cord. Contact with a "live" wire will also make exposed metal partsof the power tool "live" and shock the operator.6. When ripping always use a rip fence or straight edge guide. This improves the accuracy cut andreduces the chance of blade binding.7. Always use blades with correct size and shape (diamond versus round) of arbor holes. Blades that donot match the mounting hardware of the saw will run eccentrically, causing loss of control.8. Never use damaged or incorrect blade washers or bolt. The blade washers and bolt were speciallydesigned for your saw, for optimum performance and safety of operation.9. Causes and Operator Prevention of Kickback: kickback is a sudden reaction to a pinched, bound or misaligned saw blade, causing an uncontrolledsaw to lift up and out of the work piece toward the operator; when the blade is pinched or bound tightly by the kerf closing down, the blade stalls and the motorreaction drives the unit rapidly back toward the operator; if the blade becomes twisted or misaligned in the cut, the teeth at the back edge of the blade can diginto the top surface of the wood causing the blade to climb out of the kerf and jump back toward theoperator.Kickback is the result of saw misuse and/or incorrect operating procedures or conditions and can beavoided by taking proper precautions as given below.Maintain a firm grip with both hands on the saw and position your arms to resist kickback forces.Position your body to either side of the blade, but not in line with the blade. Kickback could cause the12

saw to jump backwards, but kickback forces can be controlled by the operator, if proper precautions aretaken. When blade is binding, or when interrupting a cut for any reason, release the trigger and holdthe saw motionless in the material until the blade comes to a complete stop. Never attempt toremove the saw from the work or pull the saw backward while the blade is in motion or kickbackmay occur. Investigate and take corrective actions to eliminate the cause of blade binding. When restarting a saw in the work piece, center the saw blade in the kerf and check that sawteeth are not engaged into the material. If saw blade is binding, it may walk up or kickback fromthe work piece as the saw is restarted. Support large panels to minimize the risk of blade pinching and kickback. Large panels tend tosag under their own weight. Supports must be placed under the panel on both sides, near theline of cut and near the edge of the panel. To minimize the risk of blade pinching and kickback, when cutting operation requires the restingof the saw on the work piece, the saw should be rested on the larger portion and the smallerpiece cut off. To avoid kickback, do support board or panel near the cut. Do not use dull or damaged blades. Unsharpened or improperly set blades produce narrow kerfcausing excessive friction, blade binding and kickback. Keep blade sharp and clean. Gum andwood pitch hardened on blades slows saw and increases potential for kickback. Keep bladeclean by first removing it from tool, then cleaning it with gum and pitch remover, hot water orkerosene. Never use gasoline. Blade depth and bevel adjusting locking levers must be tight and secure before making cut. Ifblade adjustment shifts while cutting, it may cause binding and kickback. Use extra caution when making a "plunge cut" into existing walls or other blind areas. Theprotruding blade may cut objects that can cause kickback. For plunge cuts, retract lower guardusing retracting handle. ALWAYS hold the tool firmly with both hands. NEVER place your hand or fingers behind the saw.If kickback occurs, the saw could easily jump backwards over your hand, leading to seriouspersonal injury. Never force the saw. Forcing the saw can cause uneven cuts, loss of accuracy, and possiblekickback. Push the saw forward at a speed so that the blade cuts without slowing.10. Check lower guard for proper closing before each use. Do not operate the saw if lower guard doesnot move freely and close instantly. Never clamp or tie the lower guard into the open position. If saw isaccidentally dropped, lower guard may be bent. Raise the lower guard with the retracting handle andmake sure it moves freely and does not touch the blade or any other part, in all angles and depths ofcut. To check lower guard, open lower guard by hand, then release and watch guard closure. Also checkto see that retracting handle does not touch tool housing. Leaving blade exposed is VERY DANGEROUSand can lead to serious personal injury.11. Check the operation of the lower guard spring. If the guard and the spring are not operatingproperly, they must be serviced before use. Lower guard may operate sluggishly due to damaged parts,gummy deposits, or a build-up of debris.12. Lower guard should be retracted manually only for special cuts such as "plunge cuts" and"compound cuts." Raise lower guard by retracting handle and as soon as blade enters the material, thelower guard must be released. For all other sawing, the lower guard should operate automatically.13. Always observe that the lower guard is covering the blade before placing saw down on bench orfloor. An unprotected, coasting blade will cause the saw to walk backwards, cutting whatever is in its13

path. Be aware of the time it takes for the blade to stop after switch is released. Before setting the tooldown after completing a cut, be sure that the lower guard has closed and the blade has come to acomplete stop.14. Use extra caution when cutting damp wood, pressure treated lumber, or wood containing knots.Adjust speed of cut to maintain smooth advancement of tool without decrease in blade speed.15. Avoid Cutting Nails. Inspect for and remove all nails from lumber before cutting.16. Place the wider portion of the saw base on that part of the workpiece which is solidly supported, noton the section that will fall off when the cut is made.17. Never attempt to saw with the circular saw held upside down in a vise. This is extremely dangerousand can lead to serious accidents.18. Some material contains chemicals which may be toxic. Take caution to prevent dust inhalation andskin contact. Follow material supplier safety data.19. Do not stop the blades by lateral pressure on the saw blade.20. Always use blades recommended in this manual. Do not use any abrasive wheels.21. Wear a dustmask and hearing protection when use the tool.SAFETY NOTICE:WARNING statements describe conditions that may lead to personnel injury including potentially fatalinjuries if the machine is not properly used and warnings are not properly followed.Caution statements describe conditions that may lead to equipment damage. Electrical shock can causeserious or fatal injury. Only qualified personnel should install, maintain or troubleshoot this equipment.WARNING: Do not operate this grinder until you are sure that you are completely familiar with the safeoperation of the grinder, all accessories and safety equipment. Improper use can lead to severeinjury. This manual defines proper use of this equipment. Before using this equipment for anyother use, please consult Baldor. Contact Baldor if you do not understand any procedure oroperation concerning this grinder or this manual. Prevent electrical shock hazard and accidental machine operation. Always disconnect grinderfrom the power source before servicing, changing accessories (such as wheels,tool rest, sparkarrestor, etc.) or before performing maintenance. Avoid accidental starting. Make sure switch is in “OFF” position before connecting to powersource. Be sure the system is properly grounded before applying power. Do not apply power before youensure that grounds are connected. Electrical shock can cause serious or fatal injury. Follow theNational Electrical Code (NEC) and local codes for the safe installation of this equipment. Always use safety glasses with side shields (or full face shield) when operating grinder. Do notuse ordinary eyeglasses. Also use face or dust mask if cutting operation is dusty. Unsuitable accessories or attachments added to this machine can create hazards. Baldoraccessories are specifically designed to be used with this grinder. Use accessories orattachments only in the proper intended manner. Accessories or attachments obtained fromanother source may cause hazards. Consult the manufacturer before use. Keep guards in place and in working order. Guards are design to prevent injury. Never operatethis equipment if a guard is damaged, missing or improperly installed.14

Remove adjusting keys and wrenches from this product after use. Check to see that keys andadjusting wrenches are removed from grinder before turning it on. Projectiles can cause severeinjury to yourself or others.Keep work area clean and well lighted. Clutter and poor lighting invites accidents.Don't use in dangerous environment. Don't use grinders in damp or wet locations, or exposethem to rain. Electrical shock can cause serious or fatal injury. Follow the National ElectricalCode (NEC) and local codes for the safe installation of this equipment.Do not wear loose clothing, neckties, rings, bracelets, or other jewelry to get caught in movingparts. Nonslip footwear is recommended. Wear protective hair covering to contain long hair.Don't over reach. Keep proper footing and balance at all times. A rotating wheel or belt cancatch an article of clothing and cause personnel injury.Secure work. Use clamps to secure the work piece when practical. It's safer than using yourhand and it keeps hands away from wheel.When starting a grinder for the first time, or after installing a replacement grinding wheel, it ismost important that the operator stand aside for at least one minute of rotation at full speed.This is the correct practice since grinding wheels can disintegrate if they have received damageduring shipping or handling.Always have the grinder switch in the “OFF” position when changing the position of the pivotarm. Do not attempt to change the pivot arm position while the belt is moving as this will createa hazardous situation for the operator.Never install a wheel that is damaged, such as a chip or crack on any surface. A damaged wheelcan disintegrate while rotating at a high RPM or when work is placed against the wheel. This canseverely harm the operator or others in the area.Check damaged parts. Before further use of the grinder, a guard or other part that is damagedshould be carefully checked to assure that it will operate properly and perform its intendedfunction. Check for alignment of moving parts, binding of moving parts, breakage of parts,mounting, and any other conditions that may affect its operation. A guard or other part that isdamaged should be properly repaired or replaced.Use proper extension cord. Make sure your extension cord is in good condition. When using anextension cord, be sure it is rated for the voltage and current rating of your product. Anundersized cord will cause a drop in line voltage resulting in loss of power and overheating.Table 1 shows the correct wire size to use depending on cord length and nameplate ampererating. If in doubt, use the next heavier gauge. The smaller the AWG gauge number, the heavierthe cord.Dust created during grinding, sawing, power sanding, drilling, and other activities may containchemicals known to the State of California to cause cancer, birth defects or other reproductiveharm.Keep children and visitors away. Remove starter keys turn off master switches. Padlockequipment or work area when not in use.Never leave grinder running unattended. Always turn power off after use.Caution Don't force grinder. It will do the job better and safer at the feed rate for which it was designed.Use right tool. Don't force tool or attachment to do a job for which it was not designed.15

Maintain grinder with care. Keep grinder clean for best and safest performance. Always useguard and eye shield. Operating the grinder without the guard and eye shield or with damagedguard and eye shield must not be attempted because of the hazard this introduces.Do not over tighten wheel nut. A damaged grinding wheel can disintegrate in all directions. Anover tightened wheel nut can stress the grinding wheel and cause it to disintegrate duringoperation. Wheel nut should be tightened just enough to prevent grinding wheel from slippingon shaft when grinding. Use only flanges furnished with this grinder. The flanges furnished withthe grinder are designed to grip the grinding wheel without introducing excessive stresses in thewheel.Replace a cracked or chipped wheel immediately. A cracked wheel will disintegrate whenoperated, causing a hazard to operator and nearby personnel. If a wheel has a chip or crack onany surface, do not use it.Maintain 1/8 or less clearance between tool rest and wheel. This clearance is necessary toprevent the work piece from becoming wedged between the wheel and tool rest and restrictingnip areas in the machine.Grind on grinding face (periphery) of wheels only. Grinding on side of wheel weakens the wheeland may cause wheel breakage. Also, grinding on the side of wheel introduces an additionalhazard due to absence of a tool rest.16

Tool SafetyCombo SanderWARNINGSAs with all machines, there is a certain amount of hazard involved with the use of this sander. Use themachine with the respect and c

Machine Shop Policies and Procedures . The College of Engineering & Computational Sciences machine shop consists of a full-service shop that provides machining, assembly and fabrication services in support of research projects and instructional laboratories for CECS s

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