Original oil and gas trade magazine vintage ad for MILLS ALLOYS, INC. was located at 3202 South San Pedro Street, Los Angeles, CA. Titanized Core Bit Drills Through Steel! McFarland No. 3 Dolly Lease, Signal Hill, California broke off a fishtail bit at a depth of 4,087 feet and thought it was sidetracked. They started coring with a Crum-Brainard Core Bit set and faced with Titan, took 18 feet of core and brought up the barrel with a the section of the fishtail bit on top, drilled out of the solid metal wing of the old bit. This unique 1931 old oilfield petroleum drilling industry equipment magazine advertisement would display beautifully matted and framed. Great graphics. Art deco.