SIL and the Ear
	SIL (dB)    Occupational                Occasional      80            No limit                         4 hours      85            No limit                         2 hours      90            8 hours                           1 hour      95            4 hours                           30 minutes    100            2 hours                           15 minutes    105            1 hour                               8 minutes    110            30 minutes                       4 minutes    115            15 minutes                       2 minutes