The Thar lignite deposit in Pakistan is a sequence of thin and thick coal seams in a 40 metre envelope within a greater sequence of silts and sands. The horizons are sub-horizontal with a maximum slope of 3°. Downhole geo Physical logs were Dis Playe D in 3D an D use D To correla Te The coal an D overbur Den horizons. w hile modelling the seams is important, the aquifers and overburden are the critical geology that affect the design and f

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