DuPont Ready Mix Plant and Pioneer Aggregate Plant

4301 Pioneer Way,
DuPont, WA 98327

  • Sales: (800) 750-0123
  • Dispatch: (800) 750-0123
  • Scale House: (800) 750-0123

Approvals: Washington State DOT, Pit #B-335


CalPortland’s Ready Mix and Pioneer Aggregates Plant is unique in the Pacific Northwest for three important reasons; 1.) the deposit consists of extremely high quality aggregates, 2.) with our plant we have the ability to separate the aggregates into individual stockpiles of very closely graded sizes (fractionated plant) and then blend these back together to meet an extremely wide range of product specifications and 3.) we have the ability to load trucks and barges. Barges can be loaded at the rate of up to 2,400 tons per hour. Barged aggregate products are shipped throughout the Puget Sound area and to Oregon, British Columbia, Alaska and the South Pacific. The plant also produces high quality ready mixed concrete for the surrounding area.

Products & Services

Gravel Borrow
Pea Gravel
Chip Rock
#4 x Dust Crushed Gravel
Special Blends on Request
5/8" Minus Crushed Gravel (CSTC)
1-1/4" Minus Crushed Gravel (CSBC)
Washed Sands (ASTM C-33 Fine Aggregate)
Washed Gravels (ASTM C-33 Size 57 & 67)
Ready Mixed Concrete

Contact Us

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