Pioneer Flintkote Plant, looking north

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Aerial view of Pioneer Flintkote, located at 5500 S. Alameda Street, between 52 St. and 55th St. in the Central Manufacturing District of Vernon view is looking north. California Milling Corp., located at 1861 E. 55th St., across the street from Pioneer, to the left of Alameda 57th St. is at bottom, from Alameda to the right. Photograph dated July 5, 1960. Pioneer Flintkote are manufacturers of asphalt and paper products such as roofing tiles and fiberboard. This site has seen many unfortunate events through the years: An asphalt vat explosion and fire occurred in 1953 a fire swept through thousands of bales of cardboard and fiberboard in 1955 and a steam explosion occurred at the paper plant in 1957.