Puerto Rico / Netherlands / Bulgaria / Egypt / Norway / Thailand / France / Japan / Pakistan / Brazil / Canada / Portugal / North Korea / United Kingdom / Malta / Philippines / China / Israel / Finland / India / Denmark / Taiwan / Germany / Romania / Croatia / Italy / Algeria / Tunisia / Bangladesh / Mexico / Iran / Sweden / Chile / Poland / Sri Lanka / Belgium / Turkey / Malaysia / Austria / United States / U.S. Virgin Islands / Vietnam / Morocco / Argentina / Luxembourg / South Korea / Spain / Greece / Ireland / /
U.S. Environmental Protection Agency / U.S. Energy Information Administration / Surface Transportation Board / Mine Safety and Health Administration / Association of Southeast Asian Nations / U.S. Bureau of the Census / office of Energy Analysis / U.S. Department of Labor / / /
Position
producer / representative / miner / /
ProgrammingLanguage
DC / /
ProvinceOrState
Alaska / Washington / New Mexico / District of Columbia / Mississippi / Arizona / Wyoming / /
Region
East Coast / Western Montana / Scandinavia / East Asia / Gulf Coast / Western Wyoming / /
Technology
coal mining technologies / linear programming algorithm / /