 Into these spaces, workmen built storage rooms which boasted wooden floors, racks specifically designed to hold the paintings and other artworks, up-to-date lighting, and dehumidification equipment.Despite the fact that the salt was mined using pipes and sluices through which flowed gravity-fed water from the mountain, which carried dissolved salt 17 miles away to Bad Ischl, where the water was evaporated, leaving behind the salt, the mine was not naturally humid, as the salt in the mine's walls absorbed excess moisture, keeping the chambers at a constant 65% humidity, while the temperature only varied from a low of 4 degrees Celsius (40 degrees Fahrenheit) in the winter to 8 degrees Celsius (47 degrees in the summer).Mining operations continued as the artwork was loaded into the mines, with the miners occasionally dragooned into helping to unload.