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Graphs showing the Burma British Empire and World production
NOTES ON TUNOSTEN
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analyses Assam average Barakar beds bismuth Burma caking carried cent Central chaung coal measures coal seams coal-bearing coalfields coking colliery Company concentrates considerable consumption contain continued countries deposits developed district east eastern Eocene export feet thick field fuel further Giridih given Gondwana granite higher hills important increased India industry iron Jharia latter less lignite limestones limited lodes lower Mergui metal miles million tons mineral mines mixed moisture Name obtained occur output percentage period places present principal probably production properties proved Provinces quartz railway Range recent Regarding relatively reported reserves result river rocks Sandstones and shales scale separated showing southern square stage steel strata strike TABLE Tavoy Tertiary thin tion trade tungsten unit Upper valley varies various veins whilst wide wolfram workable World