(_d_) Whether it is desired to dig for, mine, and work all minerals and precious stones, or some one or more and which of them; and (_e_) A copy of the memorandum and articles of association of any syndicate or corporation applying as aforesaid. [Sidenote: Form of lease and assignment thereof.] 13. A mining lease shall be in the Form III., and an assignment thereof in the Form IV. set forth in the Appendix hereto, or as near thereto as circumstances admit. [Sidenote: Boundaries.] 14. All mining areas shall be bounded by straight lines and vertical planes from the surface boundary lines downwards to an unlimited depth from the surface. [Sidenote: Permanent beacons to be erected.] 13. Within a period not exceeding twelve months from the date of the commencement of a mining lease there shall be erected by the lessee beacons of a permanent character:— (_a_) In the case of a lode mining lease, at the corners of each claim; and (_b_) In the case of an alluvial lease, at each angular point of the polygon formed by the boundary lines, and at such other points as may be necessary to secure that no two consecutive beacons shall be more than 2000 feet apart: Provided that where for any reason it may be impracticable to comply strictly with these provisions, the Government Inspector of Mines may authorise the placing of beacons at such other points as may in his opinion most conveniently define the boundaries of the area. [Sidenote: Beacons to be kept in good repair.] 16. A lessee of a mining lease shall keep his beacons and boundary marks in good condition and repair so that they shall be at all times a reasonable guide for persons desirous of marking out contiguous areas. [Sidenote: Commencement of working.] 17. The lessee of a mining lease shall within twelve months of date of granting of such lease, or within such further time as the Governor by writing under his hand may grant, commence mining operations upon the lands subject to his said lease. [Sidenote: Mines to be effectually worked.] 18. The lessee of a mining lease will at all times during the continuance thereof, except during the first twelve months, and unless prevented by any disturbances, or by unavoidable accident, effectually and vigorously work and develop and carry on mining operations on the land subject to the said lease. [Sidenote: Conditions of adequate working.] 19. No mine shall be considered to be effectually or properly worked within the meaning of the preceding regulation unless it can be shown that an expenditure per annum has been incurred in respect of working on the ground of at least £2 per acre in the case of an alluvial, and £100 per claim in the case of a lode mining, lease. [Sidenote: Concentrated working.]