Mine · Amador County, California, United States

Specialty Granules (Ione) LLC

Specialty Granules (Ione) LLC is a mine in Amador County, California, United States, owned by Specialty Granules LLC.

Facts

Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.

Fact	Value	Source
Location	Amador County	MSHA Mines Data Set · Public domain · checked 24 Oct 2026
Status	Operating (active)	MSHA Mines Data Set · Public domain · checked 24 Oct 2026
Commodities	sand and gravel (mainly sand and gravel)	MSHA Mines Data Set · Public domain · checked 24 Oct 2026
Owner	Specialty Granules LLC (controls the operator)	MSHA Mines Data Set · Public domain · checked 24 Oct 2026
Operator	Specialty Granules (Ione) LLC	MSHA Mines Data Set · Public domain · checked 24 Oct 2026
Employees	91 people (annual average, in 2025)	MSHA Mines Data Set · Public domain · checked 24 Oct 2026
Mine type	Surface	MSHA Mines Data Set · Public domain · checked 24 Oct 2026
Coordinates	38.3436, -120.9186	MSHA Mines Data Set · Public domain · checked 24 Oct 2026

Research on this mine and its owner.Who owns it up to the parent company, its permits, resources and offtake, and an introduction to the owner.

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How its owner compares

Specialty Granules LLC owns 4 of the 2,675 mines in the United States in our data with a named owner; 99 owners have more. Counts cover the mines in our data that name an owner, holder or operator; an asset with several owners counts for each.

Owner in United States	Rank	Mines	Share
Alpha Metallurgical Resources Inc	1st	56	2.1%
Sev.en Global Investments a.s.	2nd	50	1.9%
Rosebud Mining Company	3rd	40	1.5%
Martin Marietta Materials Inc	4th	29	1.1%
Metinvest B V	4th	29	1.1%
Specialty Granules LLC	100th	4	0.15%

Nearby

Within 50 km of this mine: 36 water rights (17 active), 4 power plants (1 operating, 557 MW) and 1 data center, measured from the coordinates in the facts above. The table shows the nearest 7, up to 3 per kind.

Name	Kind	Size	Status	Distance
Mokelumne River municipal and recreation right A004228	Water right	316,250 acre-ft/year	Active	11 km
Mokelumne River municipal right A013156	Water right	434,962 acre-ft/year	Permitted	11 km
Mokelumne River power right A004768	Water right	470,457 acre-ft/year	Active	11 km
Dry Creek Energy Storage, LLC	Power plant	160 MW	Permitted	18 km
Cosumnes Power Plant	Power plant	557 MW	Operating	18 km
Juniper Creek Storage	Power plant	200 MW	Permitted	34 km
Edgeconnex Data Center	Data center	—	—	42 km

Owner, operator and place

Other mines in California

All 98 mines in California, United States

Data on this page

Source: U.S. Energy Information Administration (Sep 2026). EIA-860 / 860M / 923, Public domain.
eWRIMS Water Rights List. eWRIMS Water Rights List, Public domain.
MSHA Mines Data Set. MSHA Mines Data Set, Public domain.