xmlns:atom="http://www.w3.org/2005/Atom"
39. At every mine a competent person appointed for the purpose by the manager shall examine thoroughly—
(a)at intervals not exceeding twenty-four hours, the external parts of any winding or haulage apparatus (including any apparatus ancillary thereto) which is in use for carrying persons through any shaft, staple-pit or unwalkable outlet;
(b)at intervals not exceeding three months and immediately before use for carrying persons on any occasion, any winding or haulage apparatus which is provided for any shaft, staple-pit or unwalkable outlet but which is not ordinarily so used.
40.—(1) At every mine a competent person appointed for the purpose by the manager shall at intervals not exceeding six months thoroughly examine all apparatus (including any detaching hook) provided for attaching to the rope any cage, carriage or kibble ordinarily used in a shaft, staple-pit or unwalkable outlet.
(2) The manager of every mine shall make and secure the efficient carrying out of arrangements whereby any such apparatus so used is at intervals not exceeding six months annealed or subjected to other appropriate heat treatment:
(3) The manager of every mine shall make and secure the efficient carrying out of arrangements whereby every detaching hook is dismantled, cleaned and refitted at intervals not exceeding three months.
(4) Where the efficient operation of any detaching hook would be affected by wear of any ancillary plate or bell a competent person appointed for the purpose by the manager shall at intervals not exceeding thirty days measure the relevant dimensions by means of calipers or gauges.