Browse Items (1 total) Browse All Browse by Tag Search Items Tags: Trusses Sort by: Title Creator Date Added Kirchin079 Boom derricks and trusses help in the stone cutting operation at a quarry. Notice the man driving the horse drawn wagon. Tags: Boom Derrick, Cutting, Granite, Quarry, Stone, Trusses Output Formats atom, dcmes-xml, json, omeka-xml, rss2