Mining Intelligence and News
United States

Hampton Corners Mine

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Categories

Summary

Mine TypeUnderground
StatusActive
Commodities
  • Salt (rock)
Mining Method
  • Room-and-pillar
Production Start... Lock
Mine Life... Lock
SnapshotHampton Corners Mine is where rock salt, integral for keeping millions of Americans safe on the roadways during the winter season, is mined.

American Rock Salt has taken extraordinary measures to meet the surge in demand during the 2025 winter season. Since October 2024, the company’s workforce has operated around the clock, with miners working 101 out of the last 113 days, including major holidays, to maintain salt production levels. These efforts, led by over 300 union members, have resulted in a more than 25% increase in daily production, achieved through opening reserve stockpiles, investing in new underground mining equipment, and expanding conveyor and bin access points.

Owners

SourceSource
CompanyInterestOwnership
American Rock Salt Company LLC (operator) 100 % Direct
American Rock Salt Company LLC owns and operates the Hampton Corners Mine.

Deposit type

  • Evaporite

Summary:

The salt units of the southern tier region of New York State are Upper Silurian in age, and were deposited in a large intercontinental sea during arid times some 415 Million years ago. Similar seas in the areas of Michigan and from Ohio to Indiana lead to similar deposits in those areas. One salt unit beneath Detroit is more than a kilometer thick. A cyclic process of seawater influx into these landlocked seas and subsequent evaporation led to the development of thick evaporate sequences. The closest modern analog may be the Dead Sea in Israel, where restricted circulation in an arid environment generates a hypersaline seaway with salt deposition in the lower parts of the basin.

In New York, thick Upper Silurian salt extends from the northern end of the Finger Lakes to the Pennsylvania border. Because the Paleozoic units in western New York dip south gently, the unit is closest to the surface near its northern extent (~500’ below in Livingston County) and deepest (~4000’ below the surface) near the Pennsylvania border (see subsurface map below, Alling, 1928).

Naturally the shallower locations provide better economics for mining. It is interesting to note that while the bedded salt deposits of New York are thinner than the massive salt deposits in the Gulf of Mexico region they are much more laterally continuous and easier to follow and mine. Halite was the principal mineral deposited in the Upper Silurian Salina Group deposit. With little impurity present to lessen its effect in reducing the freezing point of water, it is an excellent source of road salt.

Reserves

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Mining Methods

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Heavy Mobile Equipment

Fleet data has not been reported.

Comminution

Crushers and Mills

Milling equipment has not been reported.

Processing

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Commodity Production

CommodityUnits202420222021
Salt (rock) kt  ....  Subscribe  ....  Subscribe  ....  Subscribe
All production numbers are expressed as de-icing salt. * Production numbers were reported as 'Average annual'

Operational metrics

Metrics2023202220212020
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Daily production capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe

Production Costs

Commodity production costs have not been reported.

Mine Financials

Units2022
Revenue M USD  ....  Subscribe

Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 26, 2025
....................... Subscription required ....................... Subscription required Subscription required Jun 26, 2025

Workforce

Total WorkforceYear
...... Subscription required 2024
...... Subscription required 2023
...... Subscription required 2022
...... Subscription required 2021
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...... Subscription required 2019
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Aerial view:

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