Correspondence, reports, and maps of the New Pedrara Mexican Onyx Company, an American firm which mined onyx marble in Baja California, Mexico from 1893-1958.
New Pedrara Mexican Onyx Company Records, 1892-1937 (MSS 828)
Extent: .25 Linear feet (1 archives box, 1 map case folder)
The New Pedrara Onyx Company of New York and Chicago began prospecting for onyx marble in northern Baja California in 1892. Onyx marble, also known as banded calcite or Mexican onyx, is used in building construction and decorative arts. Company president Samuel Franklin Emmons (1841-1911) dispatched George Foster and William Denton (1828-1907) to survey mineral deposits in Baja California. After exploring the Punta Final region, they discovered the El Mármol site with rich deposits of onyx marble.
The New Pedrara Mexican Onyx Company was established in San Diego and began quarrying onyx marble at El Mármol in 1893. The slabs were shipped 50 miles overland on a wagon road to Puerto Santa Catarina, where they were barged to ships offshore for transport to San Diego. The onyx marble was cut and polished at the waterfront plant on 23rd Street; both raw and finished onyx were shipped to buyers worldwide. In 1910, the San Diego Union and Daily Bee described the New Pedrara Mexican Onyx Company as the "largest producers and shippers of onyx in the world." New Pedrara onyx marble was featured in the construction of the grand lobby of the Spreckels Theatre in San Diego in 1912.
The New Pedrara Mexican Onyx Company was incorporated in San Diego in 1906. In 1915, it was reorganized into the Lyman-Mills Onyx and Marble Company under Leslie B. Mills, and 1921 it became the Southwest Onyx and Marble Company. Demand for onyx marble declined during the 1930s and 1940s, and the quarry closed in 1958.
Records of the New Pedrara Mexican Onyx Company, an American firm which mined onyx marble in Baja California from 1893-1958. The collection includes correspondence, reports, maps, and ephemera regarding the establishment and operations of the company.