Operational since 1969. Henderson & Coker Inc. Has been catering to ALL its customers residential and commercial construction needs based across the lake martin area. Located in alexander. ALA. . Its capability ranges from constructing a fleet of excavators UP to STATE-OF-THE-ART concrete pumps. Its list of services includes general contracting. ALL types of excavating. Concrete PUMPING/FINISHING. Dirt moving. PRE-ENGINEERED buildings. Waterproofing. Commercial construction. Material hauling. Cleaning. Road building. Slough dredging. Concrete house foundations. And many more.