After the 1942 attack on the railway transformer, Chief of Electrical Engineering at the mine, Petter Deinboll's own father, engineer Petter Blessing Deinboll, was assigned the task of restoring power.
After the 1942 bombing of the railway transformer, the head of electrical engineering at the mine, Petter Deinboll's father, an engineer, was tasked with getting the power back on.