Texas Corporation Pens Deal to Create Roof Top Wind Turbines for 90,000 Sq-Ft Storehouse. Building Turbines (PINKS: BLD W) Works on the Composition and Manufacture of Patented Roof Top Wind Turbines. Company: Building Turbines, Corp. 9-Day Target: $.45 At this time: .038 Symbol to buy: BLD W Trade Date: Aug 5 Ecological Power Business On The Brink To Lift Off Next Week.