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HARTMANN PIT
I-39, north to I-43, north to Fredonia, WI., to Waukeke, WI., then north on CR-"H", for 4 miles, then west on Pioner Dr.. The mine is located on the left., Ozaukee County, WI
MSHA ID4700853
TYPESurface
MATERIALConstruction Sand and Gravel
EMPLOYEES5
MATERIALS PRODUCED
Construction Sand and Gravel
COMPANY INFORMATION
Operator
Hartmann Sand & Gravel Company Inc
Parent Company
Richard Rathke
Company Type
Corporation
DIRECTIONS
193
CONTACT
Contact information not available for unclaimed listings.
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Data Source
Mine Safety and Health Administration (MSHA)
Last updated: 1/30/2026
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