"The company in Soma made a statement that there was an
oil-filled transformer inside the mine.
Kraft paper is widely used as a form of cellulose insulation in
oil-filled transformer equipment [1-5].
Bob Virtue, chief commanding officer of Lothian and Borders Fire Brigade, said the blaze began in an
oil-filled transformer before spreading to other parts of the building.
It is mainly used in
oil-filled transformers as an insulating and cooling medium.
"The critical materials used in
oil-filled transformers have not changed substantially since these transformers were introduced in the late 19th century.
In addition to askarel units, an estimated 2 million mineral
oil-filled transformers contain PCBs.