Duct design & installation - Concrete products company A national concrete products company was dealing with excessive levels of airborne silica dust from raw materials and production processes. Their existing dust collectors lacked proper ductwork integration, and a large gas-powered rotating dryer posed additional challenges due to heat and geometry.... Duct design & installation - Concrete products company A national concrete products company was dealing with excessive levels of airborne silica dust from raw materials and production processes. Their existing dust collectors lacked proper ductwork integration, and a large gas-powered rotating dryer posed additional challenges due to heat and geometry....