Section 35, The Concessions Ordinance

There shall be kept at the principal office within Sierra Rb eckords,1f h h ld f . . f l d oo s, p ans, Leone o t e o er o a concessiOn m respect o an upon etc., to be which mining or prospecting operations are being conducted- kept. (a) accurate and regular records containing full particulars of all minerals obtained under the concession and the manner in which they have been disposed of, the number of Europeans and the number of non-Europeans employed in mining operations on the area of the concession, and (b) correct plans and sections of all mines and of all veins and lodes which shall have been discovered on the area of the concession, upon which the extent, position and actual conditions of the works shall at least once in every six months be accurately delineated. The scale of plans and sections shall be, for underground plans 1/480, and surface plans l/1,200 or 1/2,400. Certified copies of plans of lode mines shall be forwarded to the Chief Inspector of Mines when so required by him within such time as he may direct.