Contract work included concrete footings, foundation and retaining walls, tower foundation, tower superstructure, exterior shaft wall and interior walls.

Work began by forming and pouring the 600 metre3 octagonal foundation mud slab. Next, we built the 70-metre-high tower using a slip-forming process. We constructed a four-foot-deep form nested within a three-level steel and wood support structure. As it filled with concrete, four 22-tonne hydraulic jacks lifted the support structure and form. As the slip-form rose, concrete that entered the top came out the bottom approximately three to six hours later. The slip rose 9 inches per hour and ran continuously for 15 days with three scheduled stops: two to insert steel reinforcing plates and one to reduce the wall thickness.