1. Iannacchione AT, Zelanko JC. Occurrence and remediation of coal mine bursts: a historical review. In: Maleki H, Wopat PF, Repsher RC, Tuchman RJ, editors. Proceedings of the mechanics and mitigation of violent failure in coal and hard-rock mines. U.S. Department of the Interior, Bureau of Mines, Washington DC. Special Publication 01-95, NTIS No. PB95-211967; 1995. p. 27–68.
2. Koehler JA. The history of gate road performance at the Sunnyside Mines: summary of U.S. Bureau of mines field notes. Washington DC: U.S. Department of the Interior, Bureau of the Mines. IC 9393; 1994. p. 43.
3. Mountain bumps at the Sunnyside Mines;Peperakis;Min Eng,1958
4. An unusual ‘bounce’ condition;Watts;Coal Age,1918
5. USBM. Report of Fatal Coal Outburst Accident at Sunnyside No. 2 Mine, December 4, 1957. Washington, DC: U.S. Bureau of Mines, Division of Coal Mine Inspection. District H; 1957. p. 12.