R 408.12648
R 408.12648 Lathes.
Cite as Mich. Admin. Code R 408.12648
Rule 2648. (1) A lathe face plate or chuck with projections on the periphery shall
not be used unless guarded.
(2) A chuck key for a lathe chuck shall be 1 of the following:
(a) Counterweighted to return it to storage position.
(b) Interlocked to prevent the chuck from being power driven when the key is in
the chuck.
(c) Spring loaded to eject it from the chuck.