Black Beauty - carbonized slag. Trace amounts of heavy metals are found in this product, and respiratory protection shall be worn. Hose length shall not exceed 300 ft. unless steps are taken to ensure that the respirator input pressure and volume are maintained at the specified value for the respirator used. Larger diameter supply hose from the compressor to the respirator hose manifold can provide higher volume. An accurate pressure gauge should be located at the inlet to the respirator hose.
Electric compressors tend to have marginal capacity.
This is especially true during periods of heavy physical activity. Properly fitting particulate filter respirators may be used for short, intermittent, or occasional dust exposures during clean-up, dumping of dust collectors, or unloading shipments of abrasives. Eye and face protection shall be supplied to the blaster when respirator design does not provide such protection, and to any other personnel working nearby. Eye and face protection equipment shall conform to OSHA 1910.133. Hearing protection shall be used by employees in close proximity to abrasive blasting operations.