1. 5 and 6 coal seams in Shuonan mining area,Ningwu coalfield are in the upper member of Taiyuan Formation,No. 宁武煤田朔南矿区5号、6号煤层位于太原组上段,5号煤厚0～3。更多例句>> 2) Shuoli kaolin 朔里矿区3) Suxian coal district 朔县矿区 1. 4 in the Suxian coal district,the ...