Chapter 7: Workingmen, footnote 123, page 310 Ch7 fn. 123 p. 310 Tags: Histories and Biographies, Labor, Environment Daniel Burns, The Elements of Coal Mining (London: Edward Arnold, 1917), 97, also 90-105. Herbert W. Hughes, A Text-Book of Coal-Mining for the Use of Colliery Managers and Others (London: Charles Griffin, 1901), 148. Andrews, Killing for Coal, 122-56.
