helium enhanced argon based shielding gas blend for metal processing by welding and metal cutting

air transportation by helicopter, namely transporting cargo; transporting bank and commercial documents; transporting medical patients; transporting passengers; transporting sightseeing tours; transporting personnel and equipment in the field of aerial photography, construction, fire control/support, flight instruction, forestry, logging, news gathering, power/pipe line utilities, and traffic monitoring/reporting

hydrogen enhanced Argon based shielding gas blend for metal processing by welding and metal cutting

milling, drilling, and internal and external turning tools and components thereof, for use with power-operated machine tools