At some points on the line of the railroad immense mounds of peat were observed which had been mined, dried, and stacked for future use by the employees of the Government.
"Due North or Glimpses of Scandinavia and Russia"
Maturin M. Ballou
In his address on the conservation of ores and related minerals, Andrew Carnegie declared that during the three-fourths of a century from 1820 to 1895 nearly 4,000,000,000 tons of coal were mined by methods so wasteful that 6,000,000,000 tons were either destroyed or allowed to remain in the ground forever inaccessible.
"History of the United States, Volume 6 (of 6)"
E. Benjamin Andrews
Cross-roads have been mined, opening up enormous craters like those I saw yesterday outside Bapaume.
"From Bapaume to Passchendaele, 1917"
Philip Gibbs