Thunder Basin Coal’s Black Thunder mine near Wright, Wyoming, USA surpassed 365 days and 2.5 million employee-hours without a single lost-time safety incident on April 28, 2009. During that time, the mining company’s 1,200 employees have produced more than 8% of the annual US coal supply from this mine. This achievement exceeds the mine’s previous safety record of 1.7 million employee-hours worked without a lost-time incident during 2001, which earned Black Thunder the Sentinels of Safety Award in recognition for operating the safest surface mine in America. (more…)