Machine shop: general machining, drilling, boring, arc, gas, MIG & TIG welding, custom metal fabricating; machinery parts Drilling and operation machinery, Boring or sinking machinery, Downhole assembly machinery, Hammer drills, Crawler drills, Pneumatic vibrators, Tunneling machinery, Striking hammers, Sinker drills, Sewer inspection machinery, Rotary drills, Drilling rigs, Long hole drills