Marion Hill Associates, Inc is the region’s leading commercial diving, marine construction, and waterways contracting company. Our team routinely handles unique problems that are encountered in the underwater construction environment. MHA strives for safety in all construction and diving projects. We offer dams, marine structures, and pilings, deep water specialists, environmental diving, harbor dredging, traveling waterscreen, intake cleaning & repair, pipeline inspection, potable water tank inspection, power plant specialists, waterways construction, zebra mussel control. We also provide deep air & mixed gas diving, underwater inspections, underwater video, dam inspection and repair, nuclear diving, towboat repair and line, underwater construction, bridge inspection and repair, traveling water screens, specialty contracts, barge raising, specialty/industrial diving.