Large Format Maps, Oregon.

Oregon Department of Geology and Mineral Industries 2026 Large Format Maps, Oregon. tabular digital data Oregon Department of Geology and Mineral Industries Digital Data MILO-4 Portland, Oregon, USA Oregon Department of Geology and Mineral Industries https://www.oregon.gov/dogami/pages/default.aspx Oregon Department of Geology and Mineral Industries 2026 Mineral Information Layer for Oregon-Release 4 (MILO-4) Release 4 Oregon Department of Geology and Mineral Industries Digital Data MILO-4 Portland, Oregon, USA Oregon Department of Geology and Mineral Industries https://www.oregon.gov/dogami/pages/default.aspx The Mineral Information Layer for Oregon-Release 4 (MILO-Release 4) is a geospatial database that stores and manages information regarding Oregon's mineral occurrences, prospects, and mines; it is the primary way in which the State extracts, researches, and displays its available historical mining and mineral resource information. The Large Format Maps table houses the hyperlinks to maps in Adobe Portable Document Format (PDF) and relates them with specific mine sites as well as document title and dates. Understand that recreation in or around inactive mine sites is extremely dangerous, and can result in serious injury or death. Stay out and stay alive! The purpose of this MILO-Release 4 is for use as reference material supporting local- to statewide-scale mineral resource and environmental assessments. These data provide a searchable catalogue with links to supporting digital documentation that allows users to extract, research, and display historical mining and mineral resource information. 08/01/1991-08/31/2024 Planned Biennial ISO 19115 Topic Category geoscientificinformation Oregon Geospatial Enterprise Office Metadata Keyword Thesaurus stone metallic mineral industrial mineral mineral resource zeolite sand and gravel USGS Thesaurus geospatial datasets hazards hazard preparedness scientific interpretation time series datasets Custom MILO (Mineral Information Layer for Oregon) Mine Mineral fuel Aggregate Gemstone Borrow Pit Prospect Quarry Gravel Pit Mineral Occurrence Oregon Geospatial Enterprise Office Metadata Keyword Thesaurus United States North America Oregon Baker Benton Clackamas Clatsop Columbia Coos Crook Curry Deschutes Douglas Gilliam Grant Harney Hood River Jackson Jefferson Josephine Klamath Lake Lane Lincoln Linn Malheur Marion Morrow Multnomah Polk Sherman Tillamook Umatilla Union Wallowa Wasco Washington Wheeler Yamhill None REPORT DATA: This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. Users of this information should review or consult the primary data and information sources to ascertain the usability of the information. This publication cannot substitute for site-specific investigations by qualified practitioners. Site-specific data may give results that differ from the results shown in the publication. See the accompanying text report for more details on the limitations of the methods and data used to prepare this publication. Oregon Department of Geology and Mineral Industries mailing and physical address

800 NE Oregon Street Suite 965

Portland Oregon 97232 USA 1 971 673 1555 1 971 673 1562 dogami-info@dogami.oregon.gov When contacting DOGAMI about this data set, please reference the data set title or other identifying information in your correspondence. DOGAMI publications can be downloaded from https://www.oregon.gov/dogami/pages/default.aspx Carlie J.M. Azzopardi Oregon Department of Geology and Mineral Industries This update and release of MILO-4 was supported through a grant from the National Geological and Geophysical Data Preservation Program (NGGDPP) under cooperative agreement number G23AP00218-01 (2023). Additional funds were provided by the State of Oregon. Unclassified Attribute accuracy is tested by manual comparison of the source and hard copy scans. The detail level (e.g. Title) of the source material and interpretation procedures for capturing that source affect the quality of the data. Fields that do not contain applicable attributes were left blank. Field checking of the data was not performed. Due to the many to many relationship some scans my be repeated, and/or some MILO points may be repeated. However no duplicated features exist although individual features may share some of the same attribute(s), but have differences in unique identifiers. Some documents are duplicated due to varying degrees in quality of scans, but each scan has it's own unique identification. Because the data were collected and reported by numerous people, the descriptions provided are not highly consistent in structure or terminology or similar characteristics may be described differently. Attribution of the database is generally sparse, meaning that not all fields are attributed. These data are scans of the literature originally found in DOGAMI published and unpublished hardcopy holdings in the Portland and Grants Pass offices, some documents may not have been included. The tabular data are presented in the form of rows representing the relationship of the map to a specific MILO point. For additional maps outside the State of Oregon please contact the Oregon Department of Geology and Mineral Industries at dogami-info@oregon.gov Oregon Department of Geology and Mineral Industries 2020 Mineral Information Layer for Oregon, Release 3 [MILO-3] Release 3 vector digital data Oregon Department of Geology and Mineral Industries Digital Data MILO-3 Portland, Oregon Oregon Department of Geology and Mineral Industries McClaughry, J.D., Niewendorp, C.A., Franczyk, J. J., Duda, C. J. M., and Madin, I. P., 2020, Mineral Information Layer for Oregon, release 3 [MILO-3]: Oregon Department of Geology and Mineral Industries Digital Data Series MILO-3, Esri geodatabase. Superseded by DOGAMI MILO, release 4. https://pubs.oregon.gov/dogami/dds/p-MILO-3.htm online 2020 publication MILO3 Oregon Department of Geology and Mineral Industries 2014 Large-Format Mine Maps - Index tabular digital data Portland, Oregon Oregon Department of Geology and Mineral Industries Grey literature. Scanning of documents done by National Mine Map Repository (NMMR) at the Office of Surface Mining Reclamation and Enforcement, 3 Parkway Center, Pittsburgh, PA 15220 https://www.oregon.gov/dogami/milo/Pages/index-minemaps.aspx online 20191028 updated Large Maps DOGAMI updated MILO's file structure in the MILO-3 update to adhere to the Geologic Map Schema (GeMS), designed by the U.S. Geological Survey. The schema can be found here (https://ngmdb.usgs.gov/Info/standards/GeMS/). Matching large-format maps to specific MILO mine points was accomplished by geospatially examining the proximity of map points versus mine points, then comparing mine names in MILO with mine names displayed on large-format maps. A level of certainty code based on proximity, map scale, and other characteristics was established. Each map was assigned a code by matching the description of level of certainty. Large Maps Oregon Department of Geology and Mineral Industries mailing and physical address

800 NE Oregon Street Suite 965