4D twin · seismic-tied
Knife River — Willamette
Knife River (MDU) · Lane County, OR · site LTH-KNIFE-RIVER-OR
Loading twin…
140 m NAVD88 · Vp low —— high
Ore–seismic crosswalk
Each shell is tied to the survey that would image it. Desk compilation from published USGS / industry methods — not the operator’s confidential cube. Not a reserve.
| Ore shell | Survey | Method | Year | Tie | Vp m/s |
|---|---|---|---|---|---|
| Willamette terrace gravel | CSZ site response | MASW | 2019 | Ties the shell | 400–2200 |
| Willamette terrace gravel | Gravel / basalt refraction | Refraction | 2017 | Ties the shell | 500–4800 |
PhD geological read
User-initiated. Grounded in MCS 2026, the mapped ore shells, and the seismic crosswalk. Not a reserve.
Willamette Valley terrace gravels. Seismic ground-motion relevant for pit-wall design.
Capacity
Workforce190
Nameplate4,500,000 tpy
Utilization82%
Effective3,690,000 tpy
t / person-year23,684
Landform is site-typed: porphyry pit, block cave, underground vein/reef, Carlin, gravel, quarry. Seismic fences are Vp-banded.