Bale Grist Mill SHP - CA State Parks
About Us. History. The origin of CPM can be traced back to California's Napa Valley, where, in 1883, the Toulouse & Delorieux Co. manufactured presses, crushers and stemmers for winemakers. In 1931, the company created the first pellet mill, the 30 HP Flat Bed with stationary flat die, and we became California Pellet Mill (CPM).