xmlns:atom="http://www.w3.org/2005/Atom"
10. In the case of roadways where rockbolts are used as the principal support—
(a)the minimum density of rockbolts in the roof must be 1 bolt per square metre;
(b)the minimum length of rockbolt in the roof must be 1.8 metres; and
(c)the maximum distance between the last completed row of rockbolts and the face must be 3.5 metres.