The Washington Companies

Last updated June 15, 2025

The Washington Companies is the parent company of several independent entities. The company is privately held, and was founded by Dennis Washington. Current companies owned by The Washington Company include:^[1]

Seaspan Corporation (shipping and shipbuilding)^[2]^[3]
Aviation Partners Inc. (airplane winglets)
Montana Resources LLP (copper and molybdenum mining)^[3]
Dominion Diamond Mines (diamond mining)^[4]
Modern Machinery (heavy equipment sales and leasing)
SRY Rail Link (rail transport in British Columbia)
Envirocon (environmental remediation and civil construction)

References

↑ "Companies". The Washington Companies.
↑ Wilson, Carla (24 June 2016). "Seaspan donations to boost training for women in B.C. trades". Times Colonist . Retrieved 3 November 2017.
1 2 Erickson, David (20 March 2017). "Missoula conglomerate Washington Cos. trying to buy Canadian mining company". Missoulian . Retrieved 3 November 2017.
↑ "DIAMONDS: Washington Cos complete Dominion Diamond deal". Canadian Mining Journal. Retrieved 3 November 2017.

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[companies-1] "Companies". The Washington Companies.

[Seaspan_donate-2] Wilson, Carla (24 June 2016). "Seaspan donations to boost training for women in B.C. trades". Times Colonist . Retrieved 3 November 2017.

[missoulian-3] 1 2 Erickson, David (20 March 2017). "Missoula conglomerate Washington Cos. trying to buy Canadian mining company". Missoulian . Retrieved 3 November 2017.

[CMJ-4] "DIAMONDS: Washington Cos complete Dominion Diamond deal". Canadian Mining Journal. Retrieved 3 November 2017.

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