3. The Salt Works extend over an area of about two hundred and fifty acres. Some of the other salt works, however, have even larger areas. The only buildings on this land consist of temporary shelters constructed for the resident labour and for an office. At a few places, pucca platforms exist for fixing the water pump when required to pump water from the sea. When not required, this pump is kept in the office. With the exception of the constructions already mentioned, the entire area of the Salt Works is open. On the sea side, it has bunds in order to prevent sea water flooding the salt pans.
Clause (m) of s. 2 of the Act reads :
"'factory' means any premises including the precincts thereof -
(i) whereon ten or more workers are working, or were working on any day of the preceding twelve months, and in any part of which a manufacturing process is being carried on with the aid of power, or is ordinarily so carried on, or
(ii) whereon twenty or more workers are working, or were working on any day of the preceding twelve months, and in any part of which a manufacturing process is being carried on without the aid of power, or is ordinarily so carried on, -
but does not include a mine subject to the operation of the Mines Act, 1952, or a railway running shed."
The relevant portion of the definition of "manufacturing process" in clause (k) of s. 2, reads :
"'manufacturing process' means any process for -
(i) making, altering, repairing, ornamenting, finishing, packing, oiling, washing, cleaning, breaking up, demolishing, or otherwise treating or adapting any article or substance with a view to its use, sale, transport, delivery or disposal; or
(ii) pumping oil, water or sewage; or .........