Black Diamond Mines

Hazel Atlas Mine Tours

brochure Black Diamond Mines - Hazel Atlas Mine Tours
What Else Will Interest Me? Park Questions? Greathouse Visitor Center is located in an underground room excavated by the silica-sand miners in the mid1920s. Displays interpret the area’s mining, cultural, and geologic history. General park information, maps, brochures, and souvenirs are also available. The visitor center is open from 10 a.m. to 4:30 p.m. on weekends and some holidays from March through November. Admission is free and all ages are welcome. Black Diamond Mines Regional Preserve is over 6,000 acres of land and contains three historic townsites: Nortonville, Somersville, and Stewartville. In addition to Hazel-Atlas Mine, the park contains historic Rose Hill Cemetery, several mine openings to explore, and 65 miles of trails. Park Naturalists conduct a variety of programs relating to the park’s natural and historic resources. Call or email a Park District naturalist at one of the Visitor Centers below. Dogs Dogs are welcome in Greathouse Visitor Center but must be on a leash. Dogs are not allowed on mine tours. BDM webpage East Bay Regional Park District Visitor Centers Ardenwood Historic Farm......................... Fremont 510-544-2797, Big Break Visitor Center at the Delta Big Break Regional Shoreline......................Oakley 510-544-3050, Coyote Hills Visitor Center Coyote Hills Regional Park........................ Fremont 510-544-3220, Crab Cove Visitor Center Crab Cove.........................................................Alameda 510-544-3187, Rocky Ridge Visitor Center Del Valle Regional Park............................Livermore 510-544-3249, Garin Barn Visitor Center/Dry Creek Garden Garin Regional Park.................................... Hayward 510-544-3220, Old Green Barn Visitor Center Sunol-Ohlone Regional Wilderness.............Sunol 510-544-3249, Tilden Regional Park–Botanic Garden Berkeley..........510-544-3169, Brochure text: Traci Parent Environmental Education Center/Little Farm Tilden Nature Area.......................................Berkeley 510-544-2233, ED CHLORIN E n Co 12/14 r 100% me su East Bay Regional Park District 2950 Peralta Oaks Court P.O. Box 5381 Oakland, CA 94605-0381 1-888-EBPARKS; Dial 711 for Telecommunications Relay Service PROCES S Take HWY 4 to the Somersville Road exit in Antioch. Drive south on Somersville Road (into the hills) to the parking lot at the end of the road. Po st Directions Mine Tours Greathouse and Sidney Flat Visitor Centers Black Diamond Mines Regional Preserve..Antioch 510-544-2750, EE FR The mine crew identified in this photograph at the Hazel-Atlas upper workings include Earl Bell, powder man, first row, left; Art Latham, mine foreman, first row, right; George Dossey, miner, second row, left; and Oscar Peterson, sand mill foreman, second row, right. The others are unidentified, circa 1930s. Stands of Coulter pine and black sage are at the northernmost limit of their distribution and several rare and/or endangered plant species have been found among the valley grassland, oak woodland, and chaparral plant communities. Black Diamond Mines Regional Preserve 10 0% Dorothy Greathouse Collection, EBRPD Greathouse Visitor Center Hazel Atlas Mine Rick Yarborough Collection, EBRPD When Can I Visit? From the mid 1850s to the early 1900s, a dozen mines supplied nearly four million tons of coal to the rapidly expanding urban and industrial centers of the San Francisco Bay Area. Rising production costs and the advent of oil as an energy source eventually ended production and turned five mining communities into ghost towns. Later, from the 1920s through the late 1940s, silica-rich sand was mined by the HazelAtlas Glass Company for the production of glass products and by the Roberts Sand Company for use in the Columbia Steel foundry. The museum and visitor center in Hazel-Atlas Mine help preserve the history of these important mining operations. Weekend tours are available for the general public from March through November. Reservations are highly recommended. Weekday programs are available for organizations and school groups (minimum 10 participants). Reservations are required. Tickets for the noon and 3 p.m. first-come/firstserved mine tours can be purchased on Saturdays and Sundays from March–November at Greathouse Visitor Center. Hazel-Atlas Mine A 950-foot section of Hazel-Atlas Mine has been restored to appear as it did when the mine was active. On a guided walk, visitors see mining methods, equipment, and tools typical of the 1940s. Plant and animal fossils in the tunnel walls provide evidence of the area’s climate and appearance 50 million years ago when the sand and coal deposits were formed. Greathouse Portal sand bunker, circa 1948 Dorothy Greathouse Collection, EBRPD Black Diamond Mines Regional Preserve was the site of California’s most productive coal field and was a major source of glass-making and foundry sands. The Hazel-Atlas silica sand mine has been restored as a mining museum and visitor center. Mining History Sand bunker, Hazel-Atlas Mine, circa 1933 How Do I Make Reservations? Dorothy Greathouse Collection, EBRPD Welcome to Black Diamond Mines Regional Preserve Weekend programs can be arranged with VISA or MasterCard by calling: 1-888-EBPARKS or by visiting Weekday programs can be arranged by calling 510-544-2750. Are There Age Restrictions? For safety reasons, children under 7 years old are not permitted on the mine tour. How Much Does It Cost? Hazel-Atlas Mine employees, circa 1933. Left to right are Jack Swearengen, chemist; R. Marvin Greathouse, original mine owner; Bob Bennett, plant manager for Hazel-Atlas in Oakland; and Earl Ramsey, miner. Tours cost $5 per person and last approximately 90 minutes. A parking fee may be charged. Fees subject to change. What Should I Wear? Wear clothing suitable for underground temperatures of 56°F. Hard hats and flashlights will be provided.

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