US Company Clinches Accord to Build Roof Top Wind Turbines for Ninety Thousand Square Feet Store. BUILDING TURBINES INC (PINKS: B L D_W) Focuses on the Design and Manufacture of Copyrighted Roof Wind Turbines. Short Term Target: $0.45 Trading Date: Monday, Aug 5th, 2013 Trade: B L D_W Company: BUILDING TURBINES, INC. Latest Pricing: $.038 Renewable Power Corporation In Line To Rise Next Week.