This Project has Three Distinct Phases


Land Acquisition and Planning



On Going Phase

The Rexton Project will initially involve surface quarries and, in the future, an underground mine. Our exploration program in the region has located limestone of both suitable quality and quantity, and we continue to work to secure property access while proceeding with applications for the required permits. Exploration may continue, as needed, to further characterize the limestone in the Rexton Project areas.

March 19, 2015

MDNR Land Transaction Following a recommendation from senior department officials, DNR Director Keith Creagh approved the Graymont land transaction application during meeting of the Natural Resources Committee held in Roscommon, MI This land transaction application approval authorized the following land and /or mineral transactions

Direct Purchase of 1,807 acres

Reduction of ~84% from original November 2013 proposal

Mineral Rights of 7,027 acres

Surface ownership remains with MDNR

Land Exchange of 831 acres

Similar value land provided in exchange

We are Listening to the Community

The final version of the
Land Transaction Application that was approved by the MDNR:

Included a new Community Development fund to provide direct economic benefit to the project area which has continued to provide funding for local improvements to townships, schools, healthcare, faith, museums, and other community suport organizations

Included additional trail easements consistent with Graymont’s
commitment to maintaining continuity throughout the project area

Reduced the amount of surface ownership requested to 2638 acres
with 831 of these acres being transferred through an exchange for similar value lands.

MDNR Land Acquisition Summary

Land Transaction Map

1,678 Acres
for a West Surface Mine

1,007 Acres as direct sale

671 Acres transferred as an exchange for land of equivalent value.

160 Acres
for an Eastern Quarry

transferred as an exchange for land of equivalent value.

7,027 Acres
for an Underground Mine

Direct purchase of sub-surface interests and rights to make limited use of the surface to support underground mine operations (Ventilation, mine access, etc.).

• State retains ownership of the surface.

Underground Mine Model

Up to 55 Acres
for an Optional-Surface Easement

To support transportation infrastructure within the project area. Note: Graymont was successful in reducing the easement designation by 66% to 18.9 acres from original option.

778 Acres
of Exchange Land

Direct purchase of land adjacent to the underground mine area.

Graymont also submitted an application to the MDNR proposing an exchange of mineral rights involving areas in the Hendricks and Trout Lake townships. This exchange was completed March 26, 2015.

Mineral Exchange Map

As per the application, Graymont transferred its mineral rights on approximately 1718 acres under State owned forest land near the Fiborn Quarry. The State already owned the surface of these properties and wished to consolidate its ownership interests, by owning both the surface and the mineral rights.

The State transferred mineral rights on an equivalent area, approximately
1712 Acres, located in the Hiawatha National Forest to Graymont.

The surface of these properties is
owned by the Federal Government,
represented by the USFS.

We estimate the active areas would be no more than 400 acres of surface mines and 1000 acres for a potential processing facility and mining infrastructure.

~2,700 Acres

Of the total area will be at the surface.

There will be no more than 400 Acres of active surface mining at any time. (Including areas undergoing active reclamation).Quarry development is expected to advance around 10-20 acres each year. Mined areas will be reclaimed concurrently as the quarry progresses.

7,027 Acres

Of the total area is mineral rights only, and in the proposed underground area.

The state will continue to own & maintain the surface.

Initial Operations

Surface Extraction - Ongoing

Designation of 50 acres within the Borgstrom Road Quarry (Former Hendricks Quarry) was made with the MDNR on December 23, 2015. Extraction from this quarry has supported evaluation for current and future limestone processing while also meeting additional local limestone market needs.

Following required permitting, Graymont's Eastern Quarry commenced operations in April of 2018. Activities in this quarry have continued to support stone evaluation for a limestone processing facility as well as supply some stone for local aggregate needs.

Limestone Processing

Graymont submitted an air permit application in March 2021 for a lime manufacturing facility to be located adjacent to the Eastern Quarry. The planned operations would include some of the latest, high efficiency limestone processing technology along with the best available control technology intended to minimieze emissions.

Additionally, a wetland permit was applied for and has been issued to support future rail infrastructure for less than 5 acres of future impact. Over 17 acres of new wetlands are being created while over 41 acres of wetlands are being placed under a conservation easement with the state of Michigan.                

Community Development Fund

Graymont committed to contribute $100,000 per year to a local community development fund (CDF) for at least the first 5 years or until a lime processing facility is operating in the project area.

The fund has been established as the Graymont Community and Economic Development Fund under the management and oversight of Lake Superior State University (LSSU).

This fund was created to provide financial support for economic and community development in areas directly and indirectly impacted by the Rexton Project with the intent of improving the quality of life of the area now, and into the future. Since this fund was established in late 2015, hundreds of thousands of dollars have been awarded throughout the local community.

Grant applications for each award cycle typically will be accepted February of each year remaining open into May.

Additional details can be found on the LSSU Community Development Fund Webpage