Exposure Standard Determination No. 01 of 2020 — Respirable Crystalline Silica and Coal Dust

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Notice Text

I, william johnston mla, minister for mines and petroleum, on advice from the mining industry advisory committee, hereby determine that the eight-hour time weighted average, being the average of a particular substance permitted over an eight hour working day and five day working week, for— 1. respirable crystalline silica is 0.05 milligrams per cubic metre (mg/m3) to take effect on the date of gazettal of this instrument of determination; and 2. respirable coal dust is 1.5 mg/m3 to take effect 12 months from the date of gazettal of this instrument of determination; and applies to all mining operations.