534. Fencing of abandoned mines and quarries.

It is the duty of the owner1 of every mine2 which has been abandoned or which has not been worked3 for a period of 12 months to secure that the surface entrance to every shaft4 or outlet is provided with an efficient inclosure, barrier, plug or other device to prevent persons from accidentally falling down the shaft or entering the outlet, and that the device provided is properly maintained5. This requirement does not, however, apply to mines which are not mines of coal, stratified ironstone, shale or fireclay and have not been worked