M-13.1, r. 1 - Regulation respecting petroleum, natural gas and underground reservoirs

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42. When a drill-stem test is being taken, and oil or gas is recovered, the well drilling licensee shall not have the drill-stems drawn out at night, unless the drilling rig is provided with a permanent lighting system illuminating the entire operation being carried out under the derrick.
O.C. 1539-88, s. 42.