10-ton Sargent plow, Portland Company, ca. 1920
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"Sitting behind the Portland Company foundry, this Caterpillar "60" has a 10-ton Sargent snowplow with side wing plows on each side. Here we can see how extensive the pulley system is to raise the plows."--Fletcher, David H. 'The Portland Company 1846-1982.' Charleston, S.C. : Arcadia Pub., 2002. 113.