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The NLRB reopened from shutdown status on November 13, 2025. Due dates to file or serve most documents were tolled during the period of the shutdown, although due dates cannot be tolled for filing and service of unfair labor practice charges, applications for awards of fees and other expenses under the Equal Access to Justice Act, and certain representation petitions. For documents where tolling applies, the terms are that for each day on which the Agency’s offices were closed for all or any portion of the day, one day is added to the time for filing or service of the document. If the new due date falls on a weekend or holiday, the new due date will be moved to the next business day. For example, if the original due date was October 7, 2025 and the shutdown lasted 43 days, the revised due date is November 19, 2025. See chart for revised due dates.

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Case

Mountain Cement Company LLC

 
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Case Number: 27-RC-368877

Date Filed: 07/07/2025

Status: Closed

Location: Laramie, WY

Region Assigned: Region 27, Denver, Colorado

Tally Issued Date:08/20/2025

Status:Closed

No. of Eligible Voters:79

Void Ballots:1

Total Ballots Counted:78

Challenged Ballots:12

Votes for Labor Union:40

Tally Type:Initial

Ballot Type:Single Labor Organization

Unit ID:A

Votes Against:26

Challenges Determinative:No

Reason Closed:Certific. of Representative

Labor Union:INTERNATIONAL BROTHERHOOD OF BOILERMAKERS, IRON SHIP BUILDERS, BLACKSMITH, FORGERS, AND HELPERS, LOCAL 101

Voting Unit (Unit A):Included: All full-time and regular part-time Dust Collector Mechanics, Electricians, Instrumentation Technicians, Laborers, Loader Operators, Lube Oiler Repairmen, Mix Chemists, Mobile Equipment Mechanics, Shipping Operators, Truck Drivers, Utility Operators, and Welder/Mechanics employed by the Employer at its Laramie, Wyoming facility. Excluded: Quarry Technicians, office clerical employees, professional employees, guards, and supervisors, as defined in the Act, and all other employees.

Union to Certify:INTERNATIONAL BROTHERHOOD OF BOILERMAKERS, IRON SHIP BUILDERS, BLACKSMITH, FORGERS, AND HELPERS, LOCAL 101


Docket Activity

Date sort ascending Document Issued/Filed By
08/28/2025 Certification of Representative NLRB - GC
08/20/2025 Tally of Ballots* NLRB - GC
07/18/2025 Notice of Election NLRB - GC
07/18/2025 Stipulated Election Agreement* NLRB - GC
07/07/2025 Signed RC Petition* Petitioner

The Docket Activity list does not reflect all actions in this case.

* This document may require redactions before it can be viewed. To obtain a copy, please file a request through our FOIA Branch.

Related Documents

Related Documents data is not available.

Allegations

Allegations data is not available.

Participants

Participant Address Phone
Employer
Legal Representative
Stolzenbach, Brian
Seyfarth Shaw LLP
 233 South Wacker Drive,
Suite 8000
Chicago, IL
60606
 (312)460-5551
 
Petitioner
Legal Representative
Sencer, Caren
Weinberg, Roger & Rosenfeld
 1375 55th Street
Emeryville, CA
94608
 (510)337-1001
 
Employer
Legal Representative
Ostern, David
Seyfarth Shaw LLP
 620 Eighth Avenue
31st Floor
New York, NY
10018
 (212)218-3377
 
Petitioner
Legal Representative
Rosenfeld, David
Weinberg, Roger & Rosenfeld
 1375 55th Street
Emeryville, CA
94608
 (510)337-1001
 
Employer
Legal Representative
Kuntz, Harrison
Seyfarth Shaw LLP
 233 South Wacker Drive, Suite 8000
Chicago, IL
60606
 (312)460-5000
 
Employer
Legal Representative
Geannacopulos, Nick
Seyfarth Shaw, LLP
 560 Mission Street, Suite 3100
San Francisco, CA
94105-2930
 (415)397-2823
 
Employer
Employer
Mountain Cement Company, LLC
 Laramie, WY
82070
 (307)745-4879
 
Petitioner
Union
INTERNATIONAL BROTHERHOOD OF BOILERMAKERS, IRON SHIP BUILDERS, BLACKSMITH, FORGERS, AND HELPERS, LOCAL 101
 Denver, CO
80207
 (913)371-2640
 

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