American Black® granite
Granite · Pennsylvania
View material sourceGeorgia marble (White Cherokee, Pearl Grey, Solar Grey, Etowah); Indiana Limestone (Standard Buff/Gray, Silver Buff); Bethel White, Barre Gray, Woodbury Gray, Swenson/Concord Gray, American Black granites; Georgia granites (Keystone Blue, Eagles Danburg)
Contact & product sources
A current producer website has not been confirmed. This producer remains listed from the documented material catalogue or quarry register.
Website recorded in the register · not verified
https://polycor.comMaterials & uses
Barre Gray® granite
Granite · Vermont
View material sourceBethel White® granite
Granite · Vermont
View material sourceGeorgia Marble™ – Pearl Grey
Marble · Georgia
View material sourceIndiana Limestone - Full Color Blend™
Limestone · Indiana
View material sourceWhite Mount Airy Granite®
Granite · North Carolina
Cladding & exterior walls · Landscape & site stone · Sculpture & monuments
Polycor continues to list this stone. MSHA record 3100037 reports Abandoned since 29 Aug 2025. The current supplying permit and extraction status need confirmation.
View material sourceConcord Gray Granite
Granite · New Hampshire
Colour families: Gray
Landscape & site stone
View material sourceWoodbury Gray Granite
Granite · Vermont
Colour families: Gray
Cladding & exterior walls · Interior walls & fireplaces · Flooring
View material sourceColours and uses reflect the linked source descriptions. Confirm origin, samples and suitability for the proposed application with the producer.
16 linked MSHA operations
These are the records linked by the curated register, which may cover only part of the producer’s operations. Portable records and facilities are identified separately.
9reported workersActiveStatus since 04/07/1998
23reported workersActiveStatus since 07/04/1976
15reported workersActiveStatus since 04/02/2021
17reported workersActiveStatus since 07/15/2015
13reported workersActiveStatus since 01/05/2026
18reported workersActiveStatus since 10/01/2020
8reported workersActiveStatus since 03/10/1976
17reported workersIntermittentStatus since 03/11/2025
9reported workersActiveStatus since 06/29/2012
9reported workersActiveStatus since 09/23/2019
15reported workersActiveStatus since 03/05/2024
4reported workersActiveStatus since 07/20/2000
5reported workersActiveStatus since 04/21/2026
3reported workersActiveStatus since 03/10/2017
17reported workersActiveStatus since 07/04/1976
31reported workersActiveStatus since 12/29/1982
MSHA’s NO_EMPLOYEES field comes from the Mine Information Form. The snapshot is dated 18 Sept 2026; it does not give this field a reporting-period date. These are mine-record figures, not current company headcounts or proof of production. MSHA field definitions.
Why this producer is here
Documented materials or architectural quarry records support this listing. An exact permit is not inferred where no supported association exists. NSI membership, photographs and employee count are not eligibility requirements.
- Register grouping
- PolycorCurated relationship; not an independent ownership audit.
- Register source
- US_Dimension_Stone_Quarry_Register_v0.7.xlsx · Live dimension quarries / Producers (curated)Register reviewed 2026-09-23; MSHA snapshot 18 Sept 2026.
- NSI catalogue coverage
- At least one associated material or operation has an NSI catalogue match.Catalogue coverage does not establish current membership.