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TMPCo

53 Heppner Dr, Mound House, NV 89706

LIKELY ACTIVELAST SEEN IN FEDERAL DATA DEC 2025 · 1 SOURCE

Operating signal within 24 months, or from a single source.

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What they make

Other Basic Inorganic Chemical Manufacturing325180

Where it is

39.22550, -119.65997 · CENSUS TIGER
COUNTY
METRO AREA
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Other plants nearby

FacilityCityIndustryStatusDistance
Ioneer Rhyolite Ridge LLCRenoOther Basic Inorganic Chemical Manufacturing
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Chemeon Surface Technology, LLCMindenOther Basic Inorganic Chemical Manufacturing
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LIKELY ACTIVE26.6 KM
Sierra Chemical COSparksOther Basic Inorganic Chemical Manufacturing
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UNVERIFIED33.3 KM
Rix IndustriesSparksAir and Gas Compressor Manufacturing
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Mechanical Battery LLCRenoAll Other Miscellaneous Electrical Equipment and Component Manufacturing
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ACTIVE34.0 KM

Every listed plant in Lyon County

Also at this address

No other federal record shares this street address.

Where this record comes from

1 source holds this plant, and 2 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

  • OSHA injury and illness reportsOPERATING
    Record 1405992 · first seen DEC 2025 · last seen DEC 2025

IN LYON COUNTY2 other plants share this one’s industry (Basic Chemical Manufacturing, NAICS 3251); 0 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Coordinates
Census geocoder: 39.225502411456,-119.659970609921 · JUL 2026
Employees (band)
OSHA: 1-19 · DEC 2025

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