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Technical Memorandum File and Literature Review <br />P125 Gravel Mine Project, Weld County, Colorado <br /> <br /> <br />ERO Project #24-180 4 <br />ERO Resources Corporation <br />Certification of Results <br /> ___________________________________ <br />Michelle Dinkel, Staff Archaeologist <br /> <br />Attachments <br /> Figure 1. Project location <br /> Figure 2. Existing Conditions <br /> <br />References Cited <br /> <br />Colorado Office of Archaeology and Historic Preservation <br /> 2024 Compass. Colorado Historical Society - Office of Archaeology and Historic Preservation Compass: <br />Colorado’s On-line Cultural Resource Database. <br />https://gis.colorado.gov/compass/OAHP/M_Search_e.asp, accessed May 14, 2024. <br /> <br />General Land Office <br /> 1863 Township 3 North, Range 67 West -GLO Original Survey Plat. U. S. Surveyor General’s Office. <br /> <br />Google, Inc. <br /> 2024 Google Earth Pro. Google Earth Pro version 7.3.3.7786 (64-bit). Online database, <br />https://earth.google.com/web. <br /> <br />Horn, Jonathon C., and Holly K. Norton <br /> 2021 Walking the Line: Guidance for Identification, Evaluation, and Field Recordation of Historical <br />Linear Sites in Colorado. Written by Alpine Archaeological Consultants, LLC for History Colorado. <br /> <br />Little, Barbara, Erika M. Seibert, Jan Townsend, John H. Sprinkle Jr., and John Knoerl <br /> 2000 National Register Bulletin: Guidelines for Evaluating and Registering Archaeological Properties. <br />Prepared by the U.S. Department of the Interior. <br /> <br />Nationwide Environmental Title Research <br /> 2024 Historic Aerials. National Environmental Title Research LLC. Online database, <br />https://www.historicaerials.com/viewer. <br /> <br />Tweto, Ogden <br /> 1979 Geologic Map of Colorado. 1:500,000. U.S. Geological Survey Special Geologic Map. <br />Department of the U.S. Geological Survey, Colorado. <br /> <br />U. S. Surveyor General’s Office <br /> 1902 Greeley 1:125000 Topographic Quadrangle Map. U. S. Surveyor General’s Office. <br /> 1950 Gowanda 1:24000 Topographic Quadrangle Map. U. S. Surveyor General’s Office.