Which of the following are included in the definition of ‘mine’ in section 2(1)(zl) of the Occupational…

Section 2(1)(zl) defines ‘mine’ as any excavation where any operation for searching for or obtaining minerals has been or is being carried on, and expressly includes, among other things: all borings, bore holes, oil wells and accessory crude conditioning plants (sub-clause (i)); all power stations, transformer sub-stations and similar installations supplying electricity solely or mainly for working the mine or a number of mines under the same management (sub-clause (ix)); and premises used for depositing sand or other material for use in a mine, being premises exclusively occupied by the owner of the mine (sub-clause (x)). (The definition corresponds to the former section 2(1)(j) of the Mines Act, 1952.)

Each of the first three options names only one of the included categories, so choosing any one of them alone is incomplete; all three are included.