Table 2.

Sources of H₂S during mining.

Source	Range
Shearer	50% to 70% [3–5]
Armoured face conveyor (depends on location of H2S zone along face)	5% to 10% [3–5]
Maingate corner	10% to 15% [3–5]
Desorbed from face	5% to 10% [3–5]
Crusher, Beam stage loader and longwall conveyor	10% to 20% [3–5]