Fig. 3
From: Analysis, occurrence and removal of polychlorinated biphenyls (PCBs) in mine water – A review

Pyranol PCB Transformers at 20 level Eagle Mine at Gilman, Colorado, 1984 (source: U.S. Environmental Protection Agency, Dan W. Bench [24]; original text in presentation: “Two of three 76 gallon [288 L] Pyranol transformers underground at the 2010 substation. There were three drained 65 gallon [246 L] Pyranol transformers at the 1623 substation behind the fire seals that could not be removed. The mine was on fire at the time of the removal. About six gallons [23 L] of Pyranol remained in each of these 65 gallon transformers.”)