Dupont Pit, operated by CalPortland Company (a Taiheiyo Cement Corp subsidiary), provides high-quality construction sand and gravel for diverse applications. Located 3 miles west of Dupont, WA, in Pierce County, the surface quarry strategically serves the Puget Sound region with a dedicated team of 57 employees, ensuring reliable supply and consistent product quality.
Operator
CalPortland Company
Parent Company
Taiheiyo Cement Corp
Company Type
Corporation
50
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47.122778, -122.640556
Data Source
Mine Safety and Health Administration (MSHA)
Last updated: 1/30/2026
From northbound I5 take exit 221 to eastbound on hwy 534. At the intersection of hwy 534 and hwy 9 head north on hwy 9 approximately 2.6 miles to the Big Lake Pit 20983 hwy 9, Mount Vernon, 98274, WA
Sand, CommonFrom the City of Granite Falls - Head N-NE approx. 6 miles on Mountain Loop Hwy. Turn Left (North) on Tharp Way. Pit Entrance is approx. 0.3 miles on Tharp Way., WA
Construction Sand and GravelFrom I5 Exit 232 head east on cook road towards Sedro Woolley at the cook/hwy 20 roundabout head east on Hwy 20 for 17 miles to 7816 Grandy Ln, the site is to the north, WA
Sand, CommonI5 South to Hwy 512. East on 512 to Portland Ave. South on Portland to 112th St. East, East to 22nd Ave, go to 10825 22nd Ave. E., WA
Construction Sand and Gravel