[ Department of Conservation : Office of Mine Reclamation : Abandoned Mined Lands Unit ]

TOMS: Topographically Occurring Mine Symbols

About

In 1998, the Office of Mine Reclamation began inventorying abandoned mined lands as part of a program to produce a report describing the "scope and magnitude" of abandoned mine issues in California. To support this effort, the Office began digitizing mining features from scanned USGS topographic quadrangles. In 2001, we completed the digitizing process for all 7.5-minute topographic quadrangles covering the state.

The Office of Mine Reclamation is pleased to be able to release this data for public use. We hope it will prove to be a valuable resource to other government agencies and interested parties working towards the reclamation of California's abandoned mine lands. However, the State of California, Department of Conservation makes no warranty as to the accuracy of this data nor its suitability for any particular use.

Spatial Data

The spatial data is available as a set of ESRI shapefiles compressed in a ZIP archive file (approx. 3.6 mb). The archive contains shapefiles for point, line and polygon features. Additionally, as a convenience, an ArcView legend file is provided for each shapefile. The archive also contains this html file, FGDC metadata, and the textual metadata for the scanned DRG's which were the source for the "TOMS" data set. FGDC metadata is included for all the formats listed below.

The archive may be obtained via http or anonymous ftp:

Metadata

Several variants of metadata are available:

Reporting Errors

If you have found errors of omission or commission in these data sets, you may send a report to the Office of Mine Reclamation. Please include the following information:

Contact Information

Office of Mine Reclamation
Abandoned Mine Lands Unit
801 K St., MS 09-06
Sacramento, CA 95814

Telephone: (916) 323-9198
Email: omr@consrv.ca.gov