NSF Product and Service Listings

These NSF Official Listings are current as of Thursday, January 29, 2026 at 12:15 a.m. Eastern Time. Please contact NSF to confirm the status of any Listing, report errors, or make suggestions.

Alert: NSF is concerned about fraudulent downloading and manipulation of website text. Always confirm this information by clicking on the below link for the most accurate information: http://info.nsf.org/Certified/Sustain/Listings.asp?Company=C0308216&Standard=NSC373&


ANSI/NSI 373
Sustainability Assessment for Natural Dimension Stone


 
Halquist Stone Company, Inc. 
N51 W23563 Lisbon Road
Sussex, WI 53089 
United States 
262-246-5036

Facility : Chilton Processing, Chilton, WI



Gold Certified
Facility Category Certification Period Certification Number
Fabricator 01/10/2018 – 12/31/2027 C0355727-100


Facility : Chilton Quarry, Chilton, WI



Gold Certified
Facility Category Certification Period Certification Number
Quarry 01/10/2018 – 12/31/2027 C0308223-100


Facility : Hamilton Quarry, Byron, WI



Gold Certified
Facility Category Certification Period Certification Number
Quarry 04/21/2022 - 12/31/2027 C0308221-101


Facility : Ideal Quarry, Sussex, WI



Gold Certified
Facility Category Certification Period Certification Number
Quarry 04/21/2022 - 12/31/2027 C0308219-102


Facility : Lannon Quarry, Lannon, WI



Gold Certified
Facility Category Certification Period Certification Number
Quarry 04/21/2022 - 12/31/2027 C0308217-102
Number of matching Manufacturers is 1
Number of matching Products is 5
Processing time was 0 seconds