The Santa Cruz County excerpt from 1926's California State mineralogy report, detailing the mines, quarries, veins, and rigs for the following substances: bituminous ore, black sand, cement, clay, coal, gold, granite, molded sand, iron, lime, limestone, mineral water, peat, petroleum, potash, and stone/sand.

Notables: topography, geography, Castle Rock Ridge, Ben Lomond Mountain, Santa Cruz Quadrangle, J C Branner, J F Newsom, Ralph Arnold, miocene, diatomaceous shale, pliocene, bituminous sandstone, City Streets Improvement Company's Mine, asphaltic rock, Walrath Mines, Pacific Improvement Company's Mine, Santa Cruz Bituminous Rock Mine, I W Moore, Rattlesnake Hill, mineralogy, Cowell Mine, Henry Cowell Lime and Cement Company, Thurber's Mine, Consolidated Bituminous Rock Company, black sand, magnetite, gold, titanium, Santa Cruz Portland Cement Company, George J Cameron, W K Berry, George R Gay, Fred Davis, San Vicente Creek Canyon, cement making machinery, San Vicente Canyon, Robert A Kinzie, George J Young, J B King, Tank Siding, limestone quarry, W F Dietrich, lignite coal, amalgam fuel, collodial fuel, calcium carbide, Look Coal Mine, C R Look / Claude R Look / Claude Look / Tony Look, Redwood Canyon, coal veins, Leonard Ranch Coal Deposit, P M Leonard, Bontadelli and Son, auriferous black sand deposits, Triumph Steel Company, quartz diorite, D M Crist, J Harris Mackenzie, L H Stowell, sponge iron, S H Cowell, W H George, Holmes Lime and Cement Company, W E Buck, W J Feary, George N Ley / George Ley, Miller Quarry, Thurber Quarry, Pacific Limestone Products Company, W E Miller, F W Johnson, D L Martin, W C Johnson, Caplatzi Quarry, St Francis Springs, Chittenden Springs, El Pajaro Springs, Olive Springs, Hinkley Creek, Elizabeth J Corcoran, white sulphur spring water, Dr G A Banks, chemistry, E W Rice, Shale Sulphur Springs, Daniels Transfer Company, peat, molding sand, asphaltum, Cymric Oil Company, Roach Sand and Gravel Plant, Danish Oil and Development Company, Santa Cruz Laveaga Trust Oil Company, United Royalties Company, Swanton Improvement Company, potash, E S Roach, Gibson Sand Pit, E L Gibson, Black Point, Taylor Sand Pit, R S Taylor, Frank Marik

factories, business, petroleum industry,