Hearst, Haggin, Tevis and Co., a company started in California in the 1850s and headed by San Francisco lawyer James Ben Ali Haggin with Lloyd Tevis and George Hearst, grew to be the largest private firm of mine-owners in the United States. Hearst himself acquired the reputation of arguably being one of the most expert prospector and judge of mining property on the Pacific coast, and contributed to the development of the modern processes of quartz mining.
George Hearst was a wealthy American businessman and United States Senator, and the father of newspaperman William Randolph Hearst.
This video is targeted to blind users.
Attribution:
Article text available under CC-BY-SA
Creative Commons image source in video
published: 10 Oct 2015
Gold Mining in South Dakota | Largest Gold Mine in North America | Documentary | 1940
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Documentary film on underground hard rock gold mining and the life of gold miners in South Dakota, as seen through the eyes of the Homestake Mining Company.
The Homestake Mine was a deep underground gold mine located in Lead, South Dakota. Until it closed in 2002 it was the largest and deepest gold mine in North America. The mine produced more than 40 million troy ounces (approximately 1.25 million kilograms) of gold during its lifetime.
* * * * * * * * * * * * * * *
History of the Homestake Mine:
The Homestake deposit was ...
published: 31 Aug 2015
RC Chambers
Park City Museum and Friends of Ski Mountain Mining History will host a lecture called R.C. Chambers given by Mark Danninger and Sandy Brumley on Wednesday, June 26, 2024 from 5-6 p.m. held at the Park City Museum Education and Collections Center located at 2079 Sidewinder Drive. More information can be found at www.parkcityhistory.org.
Robert Craig Chambers was a man of many connections. Perhaps most prominently, he served as the agent of George Hearst in the acquisition of The Ontario Mine. He also used John Daly as an agent to acquire additional properties in the Park City mining districts. His connection to Hearst involved a swirl of others, including Marcus Daley, James Ben Ali Haggin and Lloyd Tevis. In Park City, his connections included M.S. Aschheim, Edward P. Ferry, Albi...
published: 28 Jun 2024
"Water, Water Everywhere—The Ontario Mine and Its Tunnels" by Mike Nelson
Park City Museum, "History Talks" lecture series and the Friends of Ski Mountain Mining History hosted "Water, Water Everywhere—The Ontario Mine and Its Tunnels" by Mike Nelson, Professor of Mining Engineering from the University of Utah, delivered on Wednesday, September 23.
Mike talked about how mining at the Ontario depended on controlling the water in the mine, using pumps and drainage tunnels. After a brief discussion of how tunneling methods developed, he described the driving of the Ontario No. 2 Drainage Tunnel—sometimes called the Keetley Tunnel—to its initial terminus in 1894. He also cover the re-opening of the tunnel after the catastrophic cave-in in 1905. Mike reviewed every issue of the Park Record from 1888 through 1908, and will share stories of some of the the people wh...
George Hearst was a wealthy American businessman and United States Senator, and the father of newspaperman William Randolph Hearst.
This video is targeted to ...
George Hearst was a wealthy American businessman and United States Senator, and the father of newspaperman William Randolph Hearst.
This video is targeted to blind users.
Attribution:
Article text available under CC-BY-SA
Creative Commons image source in video
George Hearst was a wealthy American businessman and United States Senator, and the father of newspaperman William Randolph Hearst.
This video is targeted to blind users.
Attribution:
Article text available under CC-BY-SA
Creative Commons image source in video
● Please SUPPORT my work on Patreon: https://bit.ly/2LT6opZ
● Visit my 2ND CHANNEL: https://bit.ly/2ILbyX8
►Facebook: https://bit.ly/2INA7yt
►Twitter: https://b...
● Please SUPPORT my work on Patreon: https://bit.ly/2LT6opZ
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►Facebook: https://bit.ly/2INA7yt
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Documentary film on underground hard rock gold mining and the life of gold miners in South Dakota, as seen through the eyes of the Homestake Mining Company.
The Homestake Mine was a deep underground gold mine located in Lead, South Dakota. Until it closed in 2002 it was the largest and deepest gold mine in North America. The mine produced more than 40 million troy ounces (approximately 1.25 million kilograms) of gold during its lifetime.
* * * * * * * * * * * * * * *
History of the Homestake Mine:
The Homestake deposit was discovered by Fred and Moses Manuel, Alex Engh and Hank Harney in April 1876, during the Black Hills Gold Rush. A trio of mining entrepreneurs, George Hearst, Lloyd Tevis, and James Ben Ali Haggin, bought it from them for $70,000 the following year. George Hearst arrived at the mine in October 1877, and took active control of the property. Hearst had to haul in all the mining equipment by wagons from the nearest railhead in Sidney, Nebraska. Arthur De Wint Foote worked as an engineer. Despite the remote location, an 80-stamp mill began crushing Homestake ore in July 1878.
The partners sold shares in the Homestake Mining Company, and listed it on the New York Stock Exchange in 1879. The Homestake would become one of the longest-listed stocks in the history of the NYSE (Con Edison's original name was New York Gas Light and was listed in 1824).
Hearst consolidated and enlarged the Homestake property by fair and foul means. He bought out some adjacent claims, and secured others in the courts.
By the time Hearst left the Black Hills in March 1879, he had added the claims of Giant, Golden Star, Netty, May Booth, Golden Star No. 2, Crown Point, Sunrise, and General Ellison to the original two claims of the Manuel Brothers, Golden Terra and Old Abe, totaling 30 acres. The ten-stamp mill had become 200, and 500 employees worked in the mine, mills, offices and shops. He owned the Boulder Ditch and water rights to Whitewood Creek, monopolizing the region. His railroad, Black Hills & Fort Pierre Railroad, gave him access to eastern Dakota territory. By 1900, the Homestake owned 300 claims, on 2000 acres, and was worked by more than 2000 employees.
In 1901, the mine started using compressed air locomotives, replacing the mules and horses by the 1920s. Charles Washington Merrill introduced cyanidization to augment mercury-amalgamation for gold recovery. "Cyanide Charlie" finally achieved 94 per cent recovery. The gold was shipped to the Denver Mint.
By 1906, the Ellison Shaft reached 1,550 feet, the B&M 1,250 feet, the Golden Star 1,100 feet, and the Golden Prospect 900 feet, producing 1,500,000 tons of ore. A disastrous fire struck on 25 March 1907, which took forty days to extinguish after the mine was flooded. Another disastrous fire struck in 1919.
In 1927, company geologist Donald H. McLaughlin used a winze from the 2,000 level to demonstrate ore reached the 3,500 foot level. The Ross shaft was started in 1934, a second winze from the 3,500 foot level reached 4,100 feet, and a third winze from 4,100 feet was started in 1937. The Yates shaft was started in 1938. Production ceased from 1943 until 1945, due to Limitation Order L-208 from the Government. By 1975, mining operations has reached the 6,800 foot level, and two winzes were planned to 8,000 feet.
Gold Mining in South Dakota | Largest Gold Mine in North America | Documentary | 1940
TBFA_0007
● Please SUPPORT my work on Patreon: https://bit.ly/2LT6opZ
● Visit my 2ND CHANNEL: https://bit.ly/2ILbyX8
►Facebook: https://bit.ly/2INA7yt
►Twitter: https://bit.ly/2Lz57nY
►Google+: https://bit.ly/2IPz7dl
✚ Watch my "Old America" PLAYLIST: https://bit.ly/2rOHzmy
Documentary film on underground hard rock gold mining and the life of gold miners in South Dakota, as seen through the eyes of the Homestake Mining Company.
The Homestake Mine was a deep underground gold mine located in Lead, South Dakota. Until it closed in 2002 it was the largest and deepest gold mine in North America. The mine produced more than 40 million troy ounces (approximately 1.25 million kilograms) of gold during its lifetime.
* * * * * * * * * * * * * * *
History of the Homestake Mine:
The Homestake deposit was discovered by Fred and Moses Manuel, Alex Engh and Hank Harney in April 1876, during the Black Hills Gold Rush. A trio of mining entrepreneurs, George Hearst, Lloyd Tevis, and James Ben Ali Haggin, bought it from them for $70,000 the following year. George Hearst arrived at the mine in October 1877, and took active control of the property. Hearst had to haul in all the mining equipment by wagons from the nearest railhead in Sidney, Nebraska. Arthur De Wint Foote worked as an engineer. Despite the remote location, an 80-stamp mill began crushing Homestake ore in July 1878.
The partners sold shares in the Homestake Mining Company, and listed it on the New York Stock Exchange in 1879. The Homestake would become one of the longest-listed stocks in the history of the NYSE (Con Edison's original name was New York Gas Light and was listed in 1824).
Hearst consolidated and enlarged the Homestake property by fair and foul means. He bought out some adjacent claims, and secured others in the courts.
By the time Hearst left the Black Hills in March 1879, he had added the claims of Giant, Golden Star, Netty, May Booth, Golden Star No. 2, Crown Point, Sunrise, and General Ellison to the original two claims of the Manuel Brothers, Golden Terra and Old Abe, totaling 30 acres. The ten-stamp mill had become 200, and 500 employees worked in the mine, mills, offices and shops. He owned the Boulder Ditch and water rights to Whitewood Creek, monopolizing the region. His railroad, Black Hills & Fort Pierre Railroad, gave him access to eastern Dakota territory. By 1900, the Homestake owned 300 claims, on 2000 acres, and was worked by more than 2000 employees.
In 1901, the mine started using compressed air locomotives, replacing the mules and horses by the 1920s. Charles Washington Merrill introduced cyanidization to augment mercury-amalgamation for gold recovery. "Cyanide Charlie" finally achieved 94 per cent recovery. The gold was shipped to the Denver Mint.
By 1906, the Ellison Shaft reached 1,550 feet, the B&M 1,250 feet, the Golden Star 1,100 feet, and the Golden Prospect 900 feet, producing 1,500,000 tons of ore. A disastrous fire struck on 25 March 1907, which took forty days to extinguish after the mine was flooded. Another disastrous fire struck in 1919.
In 1927, company geologist Donald H. McLaughlin used a winze from the 2,000 level to demonstrate ore reached the 3,500 foot level. The Ross shaft was started in 1934, a second winze from the 3,500 foot level reached 4,100 feet, and a third winze from 4,100 feet was started in 1937. The Yates shaft was started in 1938. Production ceased from 1943 until 1945, due to Limitation Order L-208 from the Government. By 1975, mining operations has reached the 6,800 foot level, and two winzes were planned to 8,000 feet.
Gold Mining in South Dakota | Largest Gold Mine in North America | Documentary | 1940
TBFA_0007
Park City Museum and Friends of Ski Mountain Mining History will host a lecture called R.C. Chambers given by Mark Danninger and Sandy Brumley on Wednesday, Jun...
Park City Museum and Friends of Ski Mountain Mining History will host a lecture called R.C. Chambers given by Mark Danninger and Sandy Brumley on Wednesday, June 26, 2024 from 5-6 p.m. held at the Park City Museum Education and Collections Center located at 2079 Sidewinder Drive. More information can be found at www.parkcityhistory.org.
Robert Craig Chambers was a man of many connections. Perhaps most prominently, he served as the agent of George Hearst in the acquisition of The Ontario Mine. He also used John Daly as an agent to acquire additional properties in the Park City mining districts. His connection to Hearst involved a swirl of others, including Marcus Daley, James Ben Ali Haggin and Lloyd Tevis. In Park City, his connections included M.S. Aschheim, Edward P. Ferry, Albion Emery and his wife Susanna Bransford, The Silver Queen. How did he use these connections and why do some say that he "double-crossed" The Silver Queen?
Mark is a mining engineer with over 30 years’ experience in open pit mining and chemical processing in maintenance, process safety management, and project management. He holds Bachelor’s Degrees in Mining Engineering and Welding Engineering, as well as a Master’s Degree in Physical Metallurgy, all from Montana Tech., in Butte, Montana. He is a long-term resident of Park City.
A mountain host and hiking guide at Park City Mountain Resort, Sandy Brumley is a descendent of iron miners in Minnesota and an avid student of Park City History. This will be the fifth in a series of presentations he has made for the Museum. He is a hike leader for the Museum and a member of Friends of Ski Mountain Mining History.
Park City Museum and Friends of Ski Mountain Mining History will host a lecture called R.C. Chambers given by Mark Danninger and Sandy Brumley on Wednesday, June 26, 2024 from 5-6 p.m. held at the Park City Museum Education and Collections Center located at 2079 Sidewinder Drive. More information can be found at www.parkcityhistory.org.
Robert Craig Chambers was a man of many connections. Perhaps most prominently, he served as the agent of George Hearst in the acquisition of The Ontario Mine. He also used John Daly as an agent to acquire additional properties in the Park City mining districts. His connection to Hearst involved a swirl of others, including Marcus Daley, James Ben Ali Haggin and Lloyd Tevis. In Park City, his connections included M.S. Aschheim, Edward P. Ferry, Albion Emery and his wife Susanna Bransford, The Silver Queen. How did he use these connections and why do some say that he "double-crossed" The Silver Queen?
Mark is a mining engineer with over 30 years’ experience in open pit mining and chemical processing in maintenance, process safety management, and project management. He holds Bachelor’s Degrees in Mining Engineering and Welding Engineering, as well as a Master’s Degree in Physical Metallurgy, all from Montana Tech., in Butte, Montana. He is a long-term resident of Park City.
A mountain host and hiking guide at Park City Mountain Resort, Sandy Brumley is a descendent of iron miners in Minnesota and an avid student of Park City History. This will be the fifth in a series of presentations he has made for the Museum. He is a hike leader for the Museum and a member of Friends of Ski Mountain Mining History.
Park City Museum, "History Talks" lecture series and the Friends of Ski Mountain Mining History hosted "Water, Water Everywhere—The Ontario Mine and Its Tunnels...
Park City Museum, "History Talks" lecture series and the Friends of Ski Mountain Mining History hosted "Water, Water Everywhere—The Ontario Mine and Its Tunnels" by Mike Nelson, Professor of Mining Engineering from the University of Utah, delivered on Wednesday, September 23.
Mike talked about how mining at the Ontario depended on controlling the water in the mine, using pumps and drainage tunnels. After a brief discussion of how tunneling methods developed, he described the driving of the Ontario No. 2 Drainage Tunnel—sometimes called the Keetley Tunnel—to its initial terminus in 1894. He also cover the re-opening of the tunnel after the catastrophic cave-in in 1905. Mike reviewed every issue of the Park Record from 1888 through 1908, and will share stories of some of the the people who worked on the tunnel that he found in those pages. Mike was commissioned to evaluate the Daly Judge tunnel for Park City Corp. during the 2002 Olympics and the Keetley tunnel for Sandy City Corp. in 2001.
Michael G. (Mike) Nelson is a professor of mining engineering at the University of Utah. He was Chair of the Department of Mining Engineering from 2008 to 2019. He was previously professor of mining engineering at the University of Alaska Fairbanks. He holds a B.S. degree in metallurgical engineering and an M.S. in applied physics, both from the University of Utah, and a Ph.D. in mining engineering from West Virginia University. Mike has worked for Kennecott Copper, Westinghouse Electric, Consolidation Coal, and EIMCO Process Equipment. Mike has holds nine patents in mining in mineral processing, He is co-author of the book, History of Flotation, and has contributed to many other technical books. He has given invited short courses in the U.S., Australia, Ecuador, and India, and has been an expert witness in the U.S. and Australia.
Mike’s dad, Tom Nelson, grew up in grew up in Wasatch and Summit County, and graduated from Park City High School in 1946. Tom’s dad, Carl, worked top car at the Silver King, and Tom worked weekends, holidays, and vacations at the Silver King while he was studying at B.Y.U. to become a high school band teacher.
Park City Museum, "History Talks" lecture series and the Friends of Ski Mountain Mining History hosted "Water, Water Everywhere—The Ontario Mine and Its Tunnels" by Mike Nelson, Professor of Mining Engineering from the University of Utah, delivered on Wednesday, September 23.
Mike talked about how mining at the Ontario depended on controlling the water in the mine, using pumps and drainage tunnels. After a brief discussion of how tunneling methods developed, he described the driving of the Ontario No. 2 Drainage Tunnel—sometimes called the Keetley Tunnel—to its initial terminus in 1894. He also cover the re-opening of the tunnel after the catastrophic cave-in in 1905. Mike reviewed every issue of the Park Record from 1888 through 1908, and will share stories of some of the the people who worked on the tunnel that he found in those pages. Mike was commissioned to evaluate the Daly Judge tunnel for Park City Corp. during the 2002 Olympics and the Keetley tunnel for Sandy City Corp. in 2001.
Michael G. (Mike) Nelson is a professor of mining engineering at the University of Utah. He was Chair of the Department of Mining Engineering from 2008 to 2019. He was previously professor of mining engineering at the University of Alaska Fairbanks. He holds a B.S. degree in metallurgical engineering and an M.S. in applied physics, both from the University of Utah, and a Ph.D. in mining engineering from West Virginia University. Mike has worked for Kennecott Copper, Westinghouse Electric, Consolidation Coal, and EIMCO Process Equipment. Mike has holds nine patents in mining in mineral processing, He is co-author of the book, History of Flotation, and has contributed to many other technical books. He has given invited short courses in the U.S., Australia, Ecuador, and India, and has been an expert witness in the U.S. and Australia.
Mike’s dad, Tom Nelson, grew up in grew up in Wasatch and Summit County, and graduated from Park City High School in 1946. Tom’s dad, Carl, worked top car at the Silver King, and Tom worked weekends, holidays, and vacations at the Silver King while he was studying at B.Y.U. to become a high school band teacher.
George Hearst was a wealthy American businessman and United States Senator, and the father of newspaperman William Randolph Hearst.
This video is targeted to blind users.
Attribution:
Article text available under CC-BY-SA
Creative Commons image source in video
● Please SUPPORT my work on Patreon: https://bit.ly/2LT6opZ
● Visit my 2ND CHANNEL: https://bit.ly/2ILbyX8
►Facebook: https://bit.ly/2INA7yt
►Twitter: https://bit.ly/2Lz57nY
►Google+: https://bit.ly/2IPz7dl
✚ Watch my "Old America" PLAYLIST: https://bit.ly/2rOHzmy
Documentary film on underground hard rock gold mining and the life of gold miners in South Dakota, as seen through the eyes of the Homestake Mining Company.
The Homestake Mine was a deep underground gold mine located in Lead, South Dakota. Until it closed in 2002 it was the largest and deepest gold mine in North America. The mine produced more than 40 million troy ounces (approximately 1.25 million kilograms) of gold during its lifetime.
* * * * * * * * * * * * * * *
History of the Homestake Mine:
The Homestake deposit was discovered by Fred and Moses Manuel, Alex Engh and Hank Harney in April 1876, during the Black Hills Gold Rush. A trio of mining entrepreneurs, George Hearst, Lloyd Tevis, and James Ben Ali Haggin, bought it from them for $70,000 the following year. George Hearst arrived at the mine in October 1877, and took active control of the property. Hearst had to haul in all the mining equipment by wagons from the nearest railhead in Sidney, Nebraska. Arthur De Wint Foote worked as an engineer. Despite the remote location, an 80-stamp mill began crushing Homestake ore in July 1878.
The partners sold shares in the Homestake Mining Company, and listed it on the New York Stock Exchange in 1879. The Homestake would become one of the longest-listed stocks in the history of the NYSE (Con Edison's original name was New York Gas Light and was listed in 1824).
Hearst consolidated and enlarged the Homestake property by fair and foul means. He bought out some adjacent claims, and secured others in the courts.
By the time Hearst left the Black Hills in March 1879, he had added the claims of Giant, Golden Star, Netty, May Booth, Golden Star No. 2, Crown Point, Sunrise, and General Ellison to the original two claims of the Manuel Brothers, Golden Terra and Old Abe, totaling 30 acres. The ten-stamp mill had become 200, and 500 employees worked in the mine, mills, offices and shops. He owned the Boulder Ditch and water rights to Whitewood Creek, monopolizing the region. His railroad, Black Hills & Fort Pierre Railroad, gave him access to eastern Dakota territory. By 1900, the Homestake owned 300 claims, on 2000 acres, and was worked by more than 2000 employees.
In 1901, the mine started using compressed air locomotives, replacing the mules and horses by the 1920s. Charles Washington Merrill introduced cyanidization to augment mercury-amalgamation for gold recovery. "Cyanide Charlie" finally achieved 94 per cent recovery. The gold was shipped to the Denver Mint.
By 1906, the Ellison Shaft reached 1,550 feet, the B&M 1,250 feet, the Golden Star 1,100 feet, and the Golden Prospect 900 feet, producing 1,500,000 tons of ore. A disastrous fire struck on 25 March 1907, which took forty days to extinguish after the mine was flooded. Another disastrous fire struck in 1919.
In 1927, company geologist Donald H. McLaughlin used a winze from the 2,000 level to demonstrate ore reached the 3,500 foot level. The Ross shaft was started in 1934, a second winze from the 3,500 foot level reached 4,100 feet, and a third winze from 4,100 feet was started in 1937. The Yates shaft was started in 1938. Production ceased from 1943 until 1945, due to Limitation Order L-208 from the Government. By 1975, mining operations has reached the 6,800 foot level, and two winzes were planned to 8,000 feet.
Gold Mining in South Dakota | Largest Gold Mine in North America | Documentary | 1940
TBFA_0007
Park City Museum and Friends of Ski Mountain Mining History will host a lecture called R.C. Chambers given by Mark Danninger and Sandy Brumley on Wednesday, June 26, 2024 from 5-6 p.m. held at the Park City Museum Education and Collections Center located at 2079 Sidewinder Drive. More information can be found at www.parkcityhistory.org.
Robert Craig Chambers was a man of many connections. Perhaps most prominently, he served as the agent of George Hearst in the acquisition of The Ontario Mine. He also used John Daly as an agent to acquire additional properties in the Park City mining districts. His connection to Hearst involved a swirl of others, including Marcus Daley, James Ben Ali Haggin and Lloyd Tevis. In Park City, his connections included M.S. Aschheim, Edward P. Ferry, Albion Emery and his wife Susanna Bransford, The Silver Queen. How did he use these connections and why do some say that he "double-crossed" The Silver Queen?
Mark is a mining engineer with over 30 years’ experience in open pit mining and chemical processing in maintenance, process safety management, and project management. He holds Bachelor’s Degrees in Mining Engineering and Welding Engineering, as well as a Master’s Degree in Physical Metallurgy, all from Montana Tech., in Butte, Montana. He is a long-term resident of Park City.
A mountain host and hiking guide at Park City Mountain Resort, Sandy Brumley is a descendent of iron miners in Minnesota and an avid student of Park City History. This will be the fifth in a series of presentations he has made for the Museum. He is a hike leader for the Museum and a member of Friends of Ski Mountain Mining History.
Park City Museum, "History Talks" lecture series and the Friends of Ski Mountain Mining History hosted "Water, Water Everywhere—The Ontario Mine and Its Tunnels" by Mike Nelson, Professor of Mining Engineering from the University of Utah, delivered on Wednesday, September 23.
Mike talked about how mining at the Ontario depended on controlling the water in the mine, using pumps and drainage tunnels. After a brief discussion of how tunneling methods developed, he described the driving of the Ontario No. 2 Drainage Tunnel—sometimes called the Keetley Tunnel—to its initial terminus in 1894. He also cover the re-opening of the tunnel after the catastrophic cave-in in 1905. Mike reviewed every issue of the Park Record from 1888 through 1908, and will share stories of some of the the people who worked on the tunnel that he found in those pages. Mike was commissioned to evaluate the Daly Judge tunnel for Park City Corp. during the 2002 Olympics and the Keetley tunnel for Sandy City Corp. in 2001.
Michael G. (Mike) Nelson is a professor of mining engineering at the University of Utah. He was Chair of the Department of Mining Engineering from 2008 to 2019. He was previously professor of mining engineering at the University of Alaska Fairbanks. He holds a B.S. degree in metallurgical engineering and an M.S. in applied physics, both from the University of Utah, and a Ph.D. in mining engineering from West Virginia University. Mike has worked for Kennecott Copper, Westinghouse Electric, Consolidation Coal, and EIMCO Process Equipment. Mike has holds nine patents in mining in mineral processing, He is co-author of the book, History of Flotation, and has contributed to many other technical books. He has given invited short courses in the U.S., Australia, Ecuador, and India, and has been an expert witness in the U.S. and Australia.
Mike’s dad, Tom Nelson, grew up in grew up in Wasatch and Summit County, and graduated from Park City High School in 1946. Tom’s dad, Carl, worked top car at the Silver King, and Tom worked weekends, holidays, and vacations at the Silver King while he was studying at B.Y.U. to become a high school band teacher.
Hearst, Haggin, Tevis and Co., a company started in California in the 1850s and headed by San Francisco lawyer James Ben Ali Haggin with Lloyd Tevis and George Hearst, grew to be the largest private firm of mine-owners in the United States. Hearst himself acquired the reputation of arguably being one of the most expert prospector and judge of mining property on the Pacific coast, and contributed to the development of the modern processes of quartz mining.