Always refer to the ANSI B7.1-2000 safety code before
using any grinding wheel
It is dangerous if mis-handled. Always use protection from injury for you and your co-worker. If I were you I'd read a safety booklet or see the ANSI B.7 safety code. Can be if not mounted and used correctly. Not sure, see your supervisor
Read the wheel speed shown on the wheel blotter and compare that with the machine spindle speed. Do not exceed that speed. Don't guess; read up on what you're doing . Pay attention to what you and your co-workers are doing.
Always ring test each wheel. They are too hard and will not grind effectively.  
Grinding Wheel Safety Thanks to GRINDWELL NORTON, LTD.