On-site Class and Group Rate Request Coble Trench Safety is the authority in underground equipment and safety supplying contractors with the equipment and knowledge to complete jobs quickly and safely. As part of the company’s diverse offerings Competent Person for Trenching and Excavation as well as Confined Space Entry classes are offered to better equip employees with the knowledge to get jobs done safely and meet O.S.H.A. requirements. We offer a variety of classes regularly scheduled throughout major cities in the Eastern United States. In addition to these classes we also offer on-site classes for contractors with more specific needs and group promotional pricing for classes. If you would like information on either subject please complete the following form: