42 Design, engineering, and manufacture of cranes, hoists, and material handling equipment; Inspection, evaluation, testing, and certification of cranes, hoists, and material handling equipment; inspection of fall protection equipment; design, development, and consulting services related thereto in the field of controlled blending, weighing, and loadout equipment; calibration services for controlled blending, weighing, and loadout equipment; testing, analysis and evaluation of the goods and services of others for the purpose of certification in the fields of controlled blending, weighing, and loadout equipment; custom programming of computer terminals, displays, and printers, for others employed in the fields of controlled blending, weighing, and loadout equipment services; engineering services in the field of controlled blending, weighing, and loadout equipment