1) Antipersonnel explosives 2) Bores for ore 3) Brings out bauxite 4) Butte installations 5) Certain naval ordnance 6) Coal country workplaces 7) Coal region workplaces 8) Collieries 9) Diamond locales 10) Diamond sites 11) Diamond sources 12) Digs for gold 13) Digs for ore 14) Digs for pay dirt 15) Excavation sites 1) Pits 
[Prohibition of Child Labour Underground] An estimated 3000 boys were affected by the new law, which was passed on 30 July 1900. The act was repealed in full by the Mines and Quarries Act 1954 (c. 70). ...
Deep holes or tunnels in plant parts caused by burrowing insects or their larvae.