Water was the lifeblood of logistics. But pumping it twelve hundred feet straight up into the sky was an unforgiving battle against fluid mechanics.
Gravity didn’t negotiate with holy prayers or royal decrees.
It exerted exactly zero point four three pounds of static head pressure for every single upright foot of height.
Lord Giles Croft stood in the cavernous lower pump vault hollowed out from the granite base of Grey Crag. He held a brass Bourdon tube pressure gauge.
Before him sat three massive multi-stage outward-pulling pumps. Their bronze impeller casings shone beneath blazing bright filament lamps.
Each pump was coupled directly to a high-speed underground steam turbine. It hummed with a smooth, powerful shaking that rang through the bedrock floor.
From the discharge pipe hub of Pump Three, an eight-inch seamless drawn copper pipe rose upward, vanishing into the upright shaft that housed the central tether cable.
Beside Giles, Master Borin Bronze-Lung adjusted a bronze gland packing nut with an open-ended wrench. He tightened it until only a single drop of cooling water dripped every four seconds.
