While working on bolts holding the TRAMAC Heavy Duty Excavator Style Rock Breaker Boom System (ID# P-152)from Primary Plant Rock Crusher Stationary Universal 5050 Jaw Crusher (ID# P-150) the unit P-152 was being held by Tadano TR400E Crane (UD# S-014) the load shifted pinning EE's right thumb between the railing and Chicago Pneumatic Air Wrench smashing the right thumb.