758. Maintenance of winding gear in staple-pits and unwalkable outlets in regard to mines.

At mines of coal, stratified ironstone, shale or fireclay1 there must be regular examination and maintenance of winding and haulage apparatus2 used for carrying persons through any staple-pit3 or unwalkable outlet4; external parts must be thoroughly examined every 24 hours; the rope must be thoroughly examined at intervals of not more than 30 days; detaching hooks must be dismantled, cleaned and refitted every three months and, if their efficiency may be affected by wear of any ancillary plate or bell, the relevant dimensions must be measured every 30 days by means of calipers or gauges5.

Any automatic contrivance to prevent