Official NJS-PAC (National Joint Steamfitter-Pipefitter Apprenticeship Committee) Rigging Manual for UA (United Association) Journeymen and Apprentices (May 1986 reprint). Comprehensive union trade reference covering wire rope, fiber rope, slings, hoisting, knot tying, load calculations, and crane safety. Highly collectible and useful reference for pipefitters, steamfitters, riggers, and trade school historians. Pages show some interior study markings (pencil/pen) from a previous user, but all text and diagrams remain clean and fully legible. Solid binding with a strong cover.
