Большой англо-русский и русско-английский словарь
explored reserves, assured resources, established resources, prospected resources, reasonable [reasonably assured] resources
Англо-русский словарь технических терминов
explored reserves, assured resources, established resources, prospected resources, reasonable [reasonably assured\] resources
Русско-английский политехнический словарь
explored reserves, assured resources, established resources, prospected resources, reasonable [reasonably assured] resources