Crane Operator - Commercial Roofing and Sheet Metal Company. Building Careers. Since 1923. The Tri-State/Service Group is a 100-year-old multi-state commercial construction group with 12 companies in the Southeastern United States. Our group offers a career with a safety- and quality-oriented company. We have an excellent opportunity in our Tri-State Roofing & Sheet Metal office in Morgantown, WV for an experienced Crane Operator. Certified CDL C...