The H&K Group specializes in Site Contracting Excavating Services, Crushed Stone Sand Gravel, Road Highway Paving Demolition, Bridge Construction Demolition, Asphalt Paving Blacktop, Ready Mix Precast Concrete, Underground Utilities Installation, Landscape Stone Supplies, Construction Drilling, Retaining Wall Construction, Recycling Clean Fill, pennsylvania pa, new jersey nj, delaware de,...