Regulation 144(1) A person shall not work at the bottom of a shaft in the course of sinking unless that person is protected by an adequate cover extending over the whole area of the shaft but with adequate space left for the ladder way and for the passage of any sinking cage, skip, bucket or other means of conveyance.(2) The cover shall(a) be at least one and a half metres below the lowest bin pass, or(b) where there are no bins below the lowest level, the cover shall be situated not more than twenty-five metres from the bottom of the shaft in vertical and steeply inclined shafts and no more than thirty metres from the bottom of the shafts in other shafts,but where substantial covers have been erected below the lowest bin pass or level temporary covers may be erected below the substantial covers within the maximum distances from the bottom of the shaft as provided in this sub-regulation.(3) A manager of a mine shall ensure that except(a) where a person is in a cage or is otherwise permitted by these Regulations, or(b) for the purpose of carrying out repairs or in the case of pressing necessity, a person does not ascend or descend in shaft or winze which has an inclination of thirty-five degree or more from the horizontal and which does not have a ladder way.(4) Subject to sub-regulation (3), a person employed in sinking a shaft in a mine may ascend from, or descend into the shaft for a distance not exceeding sixty metres by means of the bucket used for hoisting material from the shaft.(5) Despite sub-regulation (4), where material is hoisted direct to the surface, a person may, with the written consent of an inspector and on conditions specified by the inspector, ascend or descend for any distance in a shaft if a “monkey” or other approved safety device is used on the bucket