Dairyland Steam Power Station Chimney - Controlled Demolition, Inc.

Controlled Demolition, Inc. (CDI) of Phoenix, Maryland, USA (acting as Explosives Subcontractor to Main Demolition Contractor, American Demolition & Nuclear Decommissioning (DND), Inc of Grand Island, New York) performs the preparation for and successful explosives felling of one (1), 700’ tall reinforced concrete windscreen and free standing internal brick liner in Alma, Wisconsin on Monday, October 1, 2018. The thin wall construction of the windscreen and reinforcing did not provide adequate “constrained” concrete to provide an acceptable hinge area for CDI to absolutely control the accuracy of fall between railroad main lines and critical electric grid infrastructure. CDI’s team designed and installed new hinges to carry the structure through initial rotation, guiding the structure precisely along the designed center of fall. There was no interruption of electric transmission operations or unplanned outage due to dust/vibration created by the felling of the structure. The railroad main lines closed during the actual felling of the structure were reopened per schedule.