Six Companies: Difference between revisions

Six Companies, Inc.
Company type	Joint venture
Industry	Construction; Railroad;
Founded	February 1931; 93 years ago
Key people	Frank Crowe
Owners	Kaiser-Bechtel (30%); MacDonald and Kahn (20%); Utah Construction Company (20%); Morrison-Knudsen (10%); Pacific Bridge Company (10%); J.F. Shea Co (10%);

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Six Companies, Inc. was a joint venture of construction companies that was formed to build the Hoover Dam on the Colorado River in Nevada and Arizona.^[1]

They later built Parker Dam, a portion of the Grand Coulee Dam, the Colorado River Aqueduct across the Mojave and Colorado Deserts to urban Southern California, and many other large projects.

Hoover Dam

On January 10, 1932, the Bureau of Reclamation made bid documents for the Hoover Dam construction project available to interested parties at $5 a copy (equivalent to $100.00 in 2023^[2]). The government would provide the materials, and the contractor was to prepare the site and build the dam. The dam was described in minute detail, covering 100 pages of text and 76 drawings. A $2 million (equivalent to $32.3 million in 2023^[3]) bid bond was to accompany each bid. The winner would have to post a $5 million (equivalent to $80.7 million in 2023^[3]) performance bond. The contractor would have seven years to build the dam, or penalties would ensue.^[4]

Because of the project's immense size and the fact that it was the first dam on the Colorado River, no single contractor had the resources to make a qualified bid alone. So, general contractors Utah Construction Company of Ogden, Utah decided to form a consortium in order to submit a joint bid for the contract. Initially, Utah Construction Company's owners, brothers E.O. and W.H. Wattis, along with the company's vice president, Andrew H. Christensen, asked Harry W. Morrison of Morrison-Knudsen to join them. After they realized the bid would be much higher than expected, the Wattis Brothers and Morrison-Knudsen convinced four additional companies to join. In February 1930 The Six Companies, Inc. was incorporated as a joint venture and they began working out a bid enlisting the help of Morrison-Knudsen employee Frank T. Crowe to do so.

The project was so complex and large that only three bids were received and, on March 4, 1931, the US Secretary of the Interior accepted the Six Companies' bid of US$48,890,955 (equivalent to $789 million in 2023^[3]). This was $5,000,000 lower than the next bidder, meaning a bid-spread of almost 10%.^[5]

The Six Companies board selected Crowe, who had helped draft the bid, as the General Construction Superintendent of the Boulder Dam construction. He was heavily involved and hired each of the men who were employed during the course of the project, lived in Boulder City with his wife and two daughters, and was on the dam site every day of the week until the project was completed.

Work began around June 1931^[6] and The Six Companies completed the dam's construction two years ahead of schedule in 1935. Crowe was awarded a bonus percentage of the profit for completing virtually every portion of the job well ahead of schedule. The dam was dedicated in September 1935 but it took an additional nine years (1938–1947) under relative secrecy, to fix serious leaks with a supplemental grout curtain.^[7]

Six Companies Railroad

The Six Companies also built the 19.1-mile (30.7 km) Six Companies Railroad. It ran along the Hemenway Wash, present day Las Vegas Bay, and connected to the US Government Hoover Dam Railroad at Lawler, Nevada, a location also known as "US Government Junction". From Lawler the railroad went north for seven miles (11 km) to Saddle Island and then east to the Three-Way Junction gravel plant, now submerged under Lake Mead. From the gravel plant the line split into two branches. One branch ran south for 4.8 miles (7.7 km) to the dam via Cape Horn, Lomix (the Low Level Concrete Mixing Plant) and Himix (the High Level Concrete Mixing Plant) and the dam face. The other branch, now also submerged under Lake Mead, ran north for 7.3 miles (11.7 km) across the Las Vegas Wash, crossed the Colorado River on a bridge into Arizona and the Arizona gravel pit (Arizona Gravel Deposits) at a location two miles (3.2 km) from Callville.

The line was constructed by railroad contractor John Phillips of San Francisco, California. Since the completion of the dam and filling of Lake Mead, Six Companies, Inc. railroad line is now submerged.

The Western Pacific Railroad purchased several of the Six Companies dump cars for company service after the dam was completed and the equipment declared surplus. One of these cars is now preserved at the Western Pacific Railroad Museum at Portola, California.

The US Government Railroad had a 10-mile (16 km) branch that brought supplies by rail from a connection with the Boulder City Branch of the Union Pacific Railroad at Boulder City, Nevada.

WWII

During World War II, the Six Companies built airstrips and related facilities on Pacific islands. The venture also held a majority ownership interest in Joshua Hendy Iron Works in Sunnyvale, California. Hendy was most known for its record-breaking assembly line production of 754 Liberty Ship EC-2 Reciprocating Steam Engines, producing one engine every 40.8 hours. They were used at the Richmond Shipyards.^[8]^[9]^[10]

Company structure

Six Companies Inc. was composed of:

Henry J. Kaiser Co. of Oakland, California and Bechtel Corporation of San Francisco (as Bechtel-Kaiser): 30%
MacDonald and Kahn of Los Angeles, California: 20%
Utah Construction Company of Ogden, Utah: 20%
Morrison-Knudsen of Boise, Idaho: 10%,
Pacific Bridge Company of Portland, Oregon: 10%
J.F. Shea Co of Portland, Oregon: 10%

Leadership was split between the companies with officers:

W.H. Wattis of Utah Construction Company (President)
W.A. Bechtel of Bechtel-Kaiser (First Vice President)
E.O. Wattis of Utah Construction Company (2nd Vice President)
Charles A Shea of J.F. Shea Co (Secretary)
Felix Kahn of MacDonald and Kahn (Treasurer)
K.K. Bechtel of Bechtel-Kaiser (Assistant Secretary-Treasurer)

Board members included:

W.H. Wattis
E.O. Wattis
Charles A. Shea
Felix Kahn
Stephen D. Bechtel
Henry J. Kaiser
Alan MacDonald
Philip Hart

References

^ Herman, Arthur (2012). Freedom's Forge: How American Business Produced Victory in World War II. New York: Random House. pp. 37, 52–5, 210. ISBN 978-1-4000-6964-4.
^ 1634–1699: McCusker, J. J. (1997). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States: Addenda et Corrigenda (PDF). American Antiquarian Society. 1700–1799: McCusker, J. J. (1992). How Much Is That in Real Money? A Historical Price Index for Use as a Deflator of Money Values in the Economy of the United States (PDF). American Antiquarian Society. 1800–present: Federal Reserve Bank of Minneapolis. "Consumer Price Index (estimate) 1800–". Retrieved February 29, 2024.
^ ^a ^b ^c Johnston, Louis; Williamson, Samuel H. (2023). "What Was the U.S. GDP Then?". MeasuringWorth. Retrieved November 30, 2023. United States Gross Domestic Product deflator figures follow the MeasuringWorth series.
^ Stevens, Joseph (1988). Hoover Dam: An American Adventure. New York: Free Press. p. 34. ISBN 0-8061-2283-8.
^ Stevens (1988), pp. 45–46.
^ Stevens (1988), pp. 35–42.
^ Rogers, J. David (September 22, 2005). "Hoover Dam: Grout Curtain Failure and Lessons Learned in Site Characterization" (PDF). Dams Symposium. Las Vegas: Association of Engineering Geologists. Archived (PDF) from the original on September 21, 2011. Retrieved June 14, 2010.
^ "Engine #754 at Joshua Hendy Iron Works". Sunnyvale History. Sunnyvale Collection. Sunnyvale, CA: Sunnyvale Public Library. Archived from the original on February 20, 2012. Retrieved August 19, 2017.
^ "Corporations: Machine Maker for the West". Time. March 25, 1946. Archived from the original on February 19, 2011.
^ Herman (2012), pp. 169–74, 176–91.

@@ Line 1: / Line 1: @@
+{{Short description|American corporate joint venture formed to build the Hoover Dam}}
-{{redirect|Six Companies|the Chinese association|Chinese Six Companies}}
+{{about|the consortium that built the [[Hoover Dam]]|the Chinese association|Chinese Six Companies}}
-'''Six Companies, Inc.''' was a [[joint venture]] of construction companies that was formed to build the [[Hoover Dam]] on the [[Colorado River]] in [[Nevada]] and [[Arizona]].<ref>Herman, Arthur. ''Freedom's Forge: How American Business Produced Victory in World War II,'' pp. 37, 52-5, 210, Random House, New York, NY, 2012. ISBN 978-1-4000-6964-4.</ref>
+{{Use mdy dates|date=August 2017}}
+{{Infobox company
+| industry = {{ubl|[[Construction]]|[[Railroad]]}}
+| founded = {{start date and age|1931|02}}
+| owners = {{ubl|[[Henry J. Kaiser|Kaiser]]-[[Bechtel Corporation|Bechtel]] (30%)|MacDonald and Kahn (20%)|[[Utah Construction Company]] (20%)|[[Morrison-Knudsen]] (10%)|Pacific Bridge Company (10%)|[[J.F. Shea Co]] (10%)}}
+| name = Six Companies, Inc.
+| type = [[Joint venture]]
+| key_people = [[Frank Crowe]]
+}}
+'''Six Companies, Inc.''' was a [[joint venture]] of construction companies that was formed to build the [[Hoover Dam]] on the [[Colorado River]] in [[Nevada]] and [[Arizona]].<ref>{{Cite book |last=Herman |first=Arthur |url=https://archive.org/details/freedomsforgehow00herm/page/37 |title=Freedom's Forge: How American Business Produced Victory in World War II |publisher=Random House |year=2012 |isbn=978-1-4000-6964-4 |location=New York |pages=[https://archive.org/details/freedomsforgehow00herm/page/37 37, 52–5, 210]}}</ref>
-They later built [[Parker Dam]], a portion of the Grand Coulee Dam, the [[Colorado River Aqueduct]] across the [[Mojave Desert|Mojave]] and [[Colorado Desert]]s to urban [[Southern California]], and other large projects.
+They later built [[Parker Dam]], a portion of the [[Grand Coulee Dam]], the [[Colorado River Aqueduct]] across the [[Mojave Desert|Mojave]] and [[Colorado Desert]]s to urban [[Southern California]], and many other large projects.
-==Hoover Dam==
-On January 10th, 1931, the [[Bureau of Reclamation]] made the bid documents available to interested parties, at five dollars a copy.  The government would provide the materials, and the contractor was to prepare the site and build the dam.  The dam was described in minute detail, covering 100&nbsp;pages of text and 76&nbsp;drawings. A $2&nbsp;million bid bond was to accompany each bid. The winner would have to post a $5&nbsp;million performance bond.  The contractor would have seven years to build the dam, or penalties would ensue.<ref>{{Harvnb|Stevens|1988|pp=34}}</ref>
+== Hoover Dam ==
-A [[consortium]] was formed by eight smaller [[general contractor]]s in order to submit a bid for the [[Hoover Dam]] construction contract.<ref>Herman, Arthur. ''Freedom's Forge: How American Business Produced Victory in World War II,'' pp. 37, 52-3, Random House, New York, NY, 2012. ISBN 978-1-4000-6964-4.</ref> (They chose to call themselves Six Companies, Inc. as an allusion to [[Chinese Six Companies]], where Chinese tongs in California took their grievances.)<ref>{{cite book|last=Reisner|first=Marc|title=Cadillac Desert: The American West and Its Disappearing Water|year=1993|publisher=Penguin Books|isbn=0140178244|pages=610}}</ref> Because of the immense size of the first [[dam]] on the Colorado River, no single contractor had the resources to make a qualified bid alone. Harry W. Morrison of [[Morrison-Knudsen]] ([[Washington Group International]], a division of [[URS Corporation]]) formed the joint venture and was elected president of it. He selected [[Frank Crowe]], an employee of Morrison-Knudsen as the General Superintendent. Crowe was the true project manager of the undertaking. He drafted the bid, costed the project, won the project selection process, and hired each of the men who were employed during the course of the project. The Six Companies started working in about June 1931.<ref>{{Harvnb|Stevens|1988|pp=35–42}}</ref>
+On January 10, 1932, the [[Bureau of Reclamation]] made bid documents for the [[Hoover Dam]] construction project available to interested parties at $5 a copy (equivalent to ${{formatprice|{{inflation|US|5|1931|{{inflation-year|US-GDP}}}}}} in {{inflation-year|US-GDP}}{{inflation-fn|US}}). The government would provide the materials, and the contractor was to prepare the site and build the dam. The dam was described in minute detail, covering 100&nbsp;pages of text and 76&nbsp;drawings. A $2&nbsp;million (equivalent to ${{formatprice|{{inflation|US-GDP|2000000|1931}}}} in {{inflation-year|US-GDP}}{{inflation-fn|US-GDP}}) bid bond was to accompany each bid. The winner would have to post a $5&nbsp;million (equivalent to ${{formatprice|{{inflation|US-GDP|5000000|1931}}}} in {{inflation-year|US-GDP}}{{inflation-fn|US-GDP}}) performance bond. The contractor would have seven years to build the dam, or penalties would ensue.<ref>{{Cite book |last=Stevens |first=Joseph |title=Hoover Dam: An American Adventure |publisher=Free Press |year=1988 |isbn=0-8061-2283-8 |location=New York |pages=34}}</ref>
+Because of the project's immense size and the fact that it was the first dam on the [[Colorado River]], no single contractor had the resources to make a qualified bid alone. So, [[general contractor]]s [[Utah Construction Company]] of [[Ogden, Utah]] decided to form a [[consortium]] in order to submit a joint bid for the contract. Initially, Utah Construction Company's owners, brothers E.O. and W.H. Wattis, along with the company's vice president, Andrew H. Christensen, asked Harry W. Morrison of [[Morrison-Knudsen]] to join them. After they realized the bid would be much higher than expected, the Wattis Brothers and Morrison-Knudsen convinced four additional companies to join. In February 1930 The Six Companies, Inc. was incorporated as a joint venture and they began working out a bid enlisting the help of Morrison-Knudsen employee [[Frank Crowe|Frank T. Crowe]] to do so.
-Six Companies Inc. was composed of:
-#[[Henry J. Kaiser|Henry J. Kaiser Co.]] of [[Oakland, California]] and [[Bechtel Corporation]] of [[San Francisco, California|San Francisco]] (Bechtel-Kaiser) - 30%
-#MacDonald and Kahn of [[Los Angeles, California]] - 20%
-#[[Utah Construction Company]] of [[Ogden, Utah]] - 20%
-#[[Morrison-Knudsen]] of [[Boise, Idaho]] - 10%,
-#Pacific Bridge Company of [[Portland, Oregon]] - 10%
-#[[J.F. Shea Co]] of Portland, Oregon - 10%
+The project was so complex and large that only three bids were received and, on March 4, 1931, the [[US Secretary of the Interior]] accepted the Six Companies' bid of US$48,890,955 (equivalent to ${{formatprice|{{inflation|US-GDP|48890955|1931}}}} in {{inflation-year|US-GDP}}{{inflation-fn|US-GDP}}). This was $5,000,000 lower than the next bidder, meaning a bid-spread of almost 10%.<ref>{{Harvp|Stevens|1988|pp=45–46}}.</ref>
-The Six Companies Inc. won the contract in 1931, after a [[bidding|bid]] of US$48,890,955 (US$711,604,200.81 inflation adjusted).  The project was so complex and large that only 3 bids were received.  The Six Companies Inc. bid was $5,000,000 lower than the next bidder, meaning a bid-spread of almost 10%.<ref>{{Harvnb|Stevens|1988|pp=45–46}}</ref> The Six Companies completed construction of "Boulder Dam—Hoover Dam" two years ahead of schedule in 1935, although it took nine years (1938–47) under relative secrecy, to fix serious leaks with a supplemental grout curtain.<ref>Rogers, J David (''September 22, 2005''). [http://web.mst.edu/~rogersda/hoover_dam/Grout%20Curtain%20Failure-Hoover%20Dam.pdf "Hoover Dam: Grout Curtain Failure and Lessons Learned in Site Characterization".] Retrieved June 14, 2010.</ref>
+The Six Companies board selected Crowe, who had helped draft the bid, as the General Construction Superintendent of the Boulder Dam construction. He was heavily involved and hired each of the men who were employed during the course of the project, lived in Boulder City with his wife and two daughters, and was on the dam site every day of the week until the project was completed.
-==Six Companies Railroad==
-The Six Companies also built the 19.1 mile Six Companies Railroad.  It connected along the Hemenway Wash, present day [[Las Vegas Bay]], to the US Government [[Hoover Dam]] Railroad at Lawler, Nevada, a location also known as "US Government Junction".  From Lawler the railroad went north for 7 miles to Saddle Island and then east to the Three-Way Junction gravel plant, now submerged under [[Lake Mead]].  From the gravel plant the line split into two branches.  One branch ran south for 4.8 miles to Hoover Dam via Cape Horn, Lomix (the Low Level Concrete Mixing Plant) and Himix (the High Level Concrete Mixing Plant) and the dam face.  The other branch is now also submerged under Lake Mead and ran north for 7.3 miles across the Las Vegas Wash, crossed the [[Colorado River]] on a bridge into [[Arizona]] and the Arizona gravel pit (Arizona Gravel Deposits) at a location 2 miles from [[Callville, Nevada|Callville]].
+Work began around June 1931<ref>{{Harvp|Stevens|1988|pp=35–42}}.</ref> and The Six Companies completed the dam's construction two years ahead of schedule in 1935. Crowe was awarded a bonus percentage of the profit for completing virtually every portion of the job well ahead of schedule. The dam was dedicated in September 1935 but it took an additional nine years (1938–1947) under relative secrecy, to fix serious leaks with a supplemental grout curtain.<ref>{{Cite web |last=Rogers |first=J. David |date=September 22, 2005 |title=Hoover Dam: Grout Curtain Failure and Lessons Learned in Site Characterization |url=http://web.mst.edu/~rogersda/hoover_dam/Grout%20Curtain%20Failure-Hoover%20Dam.pdf |access-date=June 14, 2010 |website=Dams Symposium |publisher=Association of Engineering Geologists |location=Las Vegas |archive-date=September 21, 2011 |archive-url=https://web.archive.org/web/20110921151521/http://web.mst.edu/~rogersda/hoover_dam/Grout%20Curtain%20Failure-Hoover%20Dam.pdf |url-status=live }}</ref>
-The line was constructed by railroad contractor John Phillips of [[San Francisco, California]].  The dam was dedicated in September 1935 and the Six Companies, Inc. railroad line is now submerged.
+== Six Companies Railroad ==
-The [[Western Pacific Railroad]] purchased several of the Six Companies dump cars for company service after the dam was completed and the equipment declared surplus.  One of these cars is now preserved at the [[Western Pacific Railroad Museum]] at [[Portola, California]].
+The Six Companies also built the {{convert|19.1|mi|km|adj=on}} Six Companies Railroad. It ran along the Hemenway Wash, present day [[Las Vegas Bay]], and connected to the US Government Hoover Dam Railroad at Lawler, Nevada, a location also known as "US Government Junction". From Lawler the railroad went north for {{convert|7|mi|km|spell=in}} to Saddle Island and then east to the Three-Way Junction gravel plant, now submerged under [[Lake Mead]]. From the gravel plant the line split into two branches. One branch ran south for {{convert|4.8|mi|km}} to the dam via Cape Horn, Lomix (the Low Level Concrete Mixing Plant) and Himix (the High Level Concrete Mixing Plant) and the dam face. The other branch, now also submerged under Lake Mead, ran north for {{convert|7.3|mi|km}} across the Las Vegas Wash, crossed the Colorado River on a bridge into Arizona and the Arizona gravel pit (Arizona Gravel Deposits) at a location {{convert|2|mi|km|spell=in}} from [[Callville, Nevada|Callville]].
+The line was constructed by railroad contractor John Phillips of [[San Francisco, California]]. Since the completion of the dam and filling of Lake Mead, Six Companies, Inc. railroad line is now submerged.
-The US Government Railroad had a 10-mile branch that brought supplies by rail from a connection with the Boulder City Branch of the [[Union Pacific Railroad]] at [[Boulder City, Nevada]].
+The [[Western Pacific Railroad]] purchased several of the Six Companies dump cars for company service after the dam was completed and the equipment declared surplus. One of these cars is now preserved at the [[Western Pacific Railroad Museum]] at [[Portola, California]].
+The US Government Railroad had a {{convert|10|mi|km|adj=on}} branch that brought supplies by rail from a connection with the Boulder City Branch of the [[Union Pacific Railroad]] at [[Boulder City, Nevada]].
 == WWII ==
-During World War II, the Six Companies built airstrips and related facilities on Pacific Islands.  Also, the Six Companies held a majority ownership interest in  [[Joshua Hendy Iron Works]] in [[Sunnyvale, California]].  Hendy was most known for its record-breaking assembly line production of 754 [[Liberty ship|Liberty Ship]] EC-2  Reciprocating Steam Engines, producing one engine every 40.8 hours. They were used at the [[Richmond Shipyards]], building the Liberty Ships.<ref>http://historicimages.insunnyvale.org/cdm4/item_viewer.php?CISOROOT=/sunnyvale&CISOPTR=284&CISOBOX=1&REC=3</ref><ref>{{cite news| url=http://www.time.com/time/magazine/article/0,9171,888186,00.html | work=Time | title=CORPORATIONS: Machine Maker for the West | date=March 25, 1946}}</ref><ref>Herman, Arthur. ''Freedom's Forge: How American Business Produced Victory in World War II,'' pp. 169-74, 176-91, Random House, New York, NY, 2012. ISBN 978-1-4000-6964-4.</ref>
+During World War II, the Six Companies built airstrips and related facilities on Pacific islands. The venture also held a majority ownership interest in [[Joshua Hendy Iron Works]] in [[Sunnyvale, California]]. Hendy was most known for its record-breaking assembly line production of 754 [[Liberty ship|Liberty Ship]] EC-2 Reciprocating Steam Engines, producing one engine every 40.8 hours. They were used at the [[Richmond Shipyards]].<ref>{{Cite web |title=Engine #754 at Joshua Hendy Iron Works |url=http://historicimages.insunnyvale.org/cdm4/item_viewer.php?CISOROOT=/sunnyvale&CISOPTR=284&CISOBOX=1&REC=3 |access-date=August 19, 2017 |website=Sunnyvale Collection |publisher=Sunnyvale Public Library |location=Sunnyvale, CA |department=Sunnyvale History |archive-date=February 20, 2012 |archive-url=https://web.archive.org/web/20120220161733/http://historicimages.insunnyvale.org/cdm4/item_viewer.php?CISOROOT=%2Fsunnyvale&CISOPTR=284&CISOBOX=1&REC=3 |url-status=live }}</ref><ref>{{Cite magazine |date=March 25, 1946 |title=Corporations: Machine Maker for the West |magazine=[[Time (magazine)|Time]] |url=http://www.time.com/time/magazine/article/0,9171,888186,00.html |url-status=dead |url-access=subscription |archive-url=https://web.archive.org/web/20110219235100/http://www.time.com/time/magazine/article/0,9171,888186,00.html |archive-date=February 19, 2011}}</ref><ref>{{harvp|Herman|2012|pp= 169-74, 176-91}}.</ref>
+== Company structure ==
+Six Companies Inc. was composed of:
+#[[Henry J. Kaiser]] Co. of [[Oakland, California]] and [[Bechtel Corporation]] of [[San Francisco, California|San Francisco]] (as Bechtel-Kaiser): 30%
+#MacDonald and Kahn of [[Los Angeles, California]]: 20%
+#[[Utah Construction Company]] of [[Ogden, Utah]]: 20%
+#[[Morrison-Knudsen]] of [[Boise, Idaho]]: 10%,
+#[[Pacific Bridge Company]] of [[Portland, Oregon]]: 10%
+#[[J.F. Shea Co]] of Portland, Oregon: 10%
+Leadership was split between the companies with officers:
+* W.H. Wattis of Utah Construction Company (President)
+* W.A. Bechtel of Bechtel-Kaiser (First Vice President)
+* E.O. Wattis of Utah Construction Company (2nd Vice President)
+* Charles A Shea of J.F. Shea Co (Secretary)
+* Felix Kahn of MacDonald and Kahn (Treasurer)
+* K.K. Bechtel of Bechtel-Kaiser (Assistant Secretary-Treasurer)
+Board members included:
+* W.H. Wattis
+* E.O. Wattis
+* Charles A. Shea
+* Felix Kahn
+* Stephen D. Bechtel
+* Henry J. Kaiser
+* Alan MacDonald
+* Philip Hart
-==See also==
+== See also ==
 *[[Grand Coulee Dam]]
 *[[Parker Dam]]
-==Notes==
+== References ==
 {{Reflist}}
+== Further reading ==
-==References==
+* [https://www.usbr.gov/lc/hooverdam/museum/clippings/clipart73.pdf ''Six Companies, Now Single Unit, Ready to Sign Contract for Hoover Dam'']; newspaper article; unknown date.
-* {{cite book|first=Joseph|last=Stevens|title=Hoover Dam:  An American Adventure|year=1988|publisher=Free Press|location=New York City|isbn=0-8061-2283-8}}
+{{refbegin}}
+* {{Cite book |last=Myrick |first=David F. |title=Railroads of Nevada and Eastern California |publisher=[[University of Nevada Press]] |year=1992 |isbn=0-87417-194-6 |volume=2: The Southern Roads |location=Reno |pages=734–752}}
-==Further reading==
+* {{Cite book |last=Wolf |first=Donald E. |title=Big Dams and Other Dreams: The Six Companies Story |publisher=[[University of Oklahoma Press]] |year=1996 |isbn=0-8061-2853-4}}
-*{{cite book
+{{refend}}
- | last = Myrick
- | first = David F.
- | authorlink =
- | coauthors =
- | year = 1992
- | pages=734–752
- | title = Railroads of Nevada and Eastern California
- | volume=Volume 2: The Southern Roads
- | publisher = [[University of Nevada Press]]
- | location =  Reno, Nevada
- | isbn = 0-87417-194-6
-}}
-*{{cite book
- | last = Wolf
- | first = Donald E.
- | authorlink =
- | coauthors =
- | year = 1996
- | title = Big Dams and Other Dreams: The Six Companies Story
- | publisher = [[University of Oklahoma Press]]
- | location =
- | isbn = 0-8061-2853-4
-}}
-{{DEFAULTSORT:Six Companies  Inc.}}
+{{DEFAULTSORT:Six Companies Inc.}}
 [[Category:Colorado River]]
+[[Category:Hoover Dam]]
 [[Category:Construction and civil engineering companies established in 1931]]
 [[Category:Construction and civil engineering companies of the United States]]
 [[Category:Bechtel]]
 [[Category:Water and politics]]
+[[Category:American companies established in 1931]]