Mining Engineering > GATE 2022 > Underground Coal Mining
In a bord and pillar development panel, headings of 4.4 m×2.5 m are advanced using solid blasting. The average pull per round of blast is 1.2 m. On an average 12 faces are blasted per day. Density of coal is 1500 kg/m3. The mine operates in three shifts. If the average daily employment is 330 persons, labour productivity (OMS) of the panel in tonne, is ________. (round off to two decimal places)
Correct : 0.70
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