Research Article

Chemometric Study of Trace Elements in Hard Coals of the Upper Silesian Coal Basin, Poland

Table 1

Characteristics of hard coal resources in Poland in 2012 [2].

No. of depositsGeological resources [mln Mg]Industrial
BalancedOff balance

Total14648,22518,3024,210

of which resources of exploited deposits:
Operating plants5119,1306,5071,178

of which resources of off balance deposits:
Total5225,13911,173
Deposits explored3411,4233,619
Deposits preexplored1813,7167,553

of which resources of abandoned deposits:
Total433,955621