Backed by 20 years of manufacturing and proven on-site experience, Rock Hog rock drilling products are capable of performing in the toughest of drilling conditions around the world. State of the Art Computer Generated & Field Proven Designs Advanced Hi-Tech Manufacturing Techniques Exact Multiple Heat Treatments Premium Aircraft Alloy Steels Superior Quality Carbides Manufactured In-House in the U.S.A. Rock Hog drilling products manufacturing plant and administrative offices for all rock drilling tools is a division of Loudon Industries, Inc., located in south-central Pennsylvania, U.S.A.