id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-4760		cet-4760		6	.pdf	application/pdf	4025	173	50	[TJ/total production of hard coal] (CSO 2012a) and their thermo-ecological cost Energy carriers inputs 2008 2009 2010 2011 TEC Steam coal 13,424 8,576 2,104 2,012 1.31 High - methane natural gas 407 494 809 877 1.15 Peat and wood 0 87 57 39 0.01 Motor gasoline 22 18 19 18 2.08 Automotive diesel oil 456 484 560 602 1.24 Light fuel oil 21 23 37 22 1.65 Coke oven gas 136 126 142 144 1.92 Electricity 15 461 15 291 15 669 15 550 4.72 Heat 4 279 4 542 5 108 4 299 2.29 Table 5: Selected material consumption in hard coal mines in Poland in the years 2008-2011 [Mg/total production of hard coal] (CSO 2012b) and their thermo-ecological cost [ The obtained results indicate, that from the point of view of improvement of ecological effectiveness of hard coal mine, the energy subsystem should be examined firstly.	cache/cet-4760.pdf	txt/cet-4760.txt