Mines (Working Facilities and Support) Act 1923

Section 15.

SECOND SCHEDULE Rules for ascertaining Area for the purpose of computing Maximum Liability op Mine Owner in respect of Authorised Workings

1 The area shall extend laterally on each side of (but not including) the inner area of protection to the following distance therefrom:—

If the depth of the seam is 160 yards or under	Nil.
If the depth of the seam exceeds 160 yards, but does not exceed 170 yards	1 ½ yards.
If the depth of the seam exceeds 170 yards, but does not exceed 180 yards	2 ½ yards.
If the depth of the seam exceeds 180 yards, but does not exceed 190 yards	4 ½ yards.
If the depth of the seam exceeds 190 yards, but does not exceed 200 yards	5 ½ yards.
If the depth of the seam exceeds 200 yards, but does not exceed 210 yards	7 yards.
If the depth of the seam exceeds 210 yards, but does not exceed 220 yards	8 yards.
If the depth of the seam exceeds 220 yards, but does not exceed 230 yards	9 yards.
If the depth of the seam exceeds 230 yards, but does not exceed 240 yards	9 ½ yards.
If. the depth of the seam exceeds 240 yards, but does not exceed 250 yards	10 yards.
If the depth of the seam exceeds 250 yards	To a line descending outwards from the railway or works at an angle of one horizontal to live vertical from a point on the boundary of the railway or' works at rail level until the depth of 650 yards is reached and thence descending vertically.

2 The area shall extend longitudinally for a distance coextensive with the part of the railway or works upon which expenditure has been incurred in making good the damage, together with a length beyond that distance at either end thereof equal to one-half of the mean depth of the seam or seams in question.