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Dust entry

Sintered-metal machining dust

Dust generated while grinding, drilling, milling, slotting, and grooving sintered-metal parts.

Airborne form

dust

The form describes what is suspended in air at the point of exposure. A material can produce more than one form, such as dust during handling and fume during heating.

Health effects

nose and throat irritationmorning coughrespiratory disorder concernsilica-related lung disease concern

Evidence

A NIOSH evaluation of sintered-metal parts machining found previously reported respiratory disorders improved or disappeared after ventilation improvements; the source describes dust containing iron, copper, lead, magnesium, zinc, tin, antimony, molybdenum, graphite, and silica, and warns that silica above its standard can cause permanent disabling lung disease.

Source: html ↗ · saved source
Description · 1
Environmental surveys ... associated with the grinding, drilling, milling-slotting, and grooving operations at an iron and copper sintered metal parts manufacturing facility ... Previously reported respiratory disorders disappear subsequent to ventilation improvements.

In the report's recommendations, NIOSH states that exposure to silica above the accepted exposure standard can lead to permanent disabling lung disease and recommends medical monitoring for workers in the evaluated operations.

Source: pdf ↗ · saved source
page 11 · V. Recommendations · 1
Since exposure to levels of silica above the accepted exposure standard can lead to permanent disabling lung disease, it is recommended that all workers involved in the operations under investigation should receive a chest X-ray and have forced vital capacity and FEV1 measured now and at yearly intervals.

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