| Section 1 | Overview | |||
| Originator | Minnesota Department of Natural Resources (MN DNR) Division of Lands and Minerals | |||
| Title | Mesabi Range Documented Mine Shafts | |||
| Abstract | The Mesabi Range Documented Mine Shafts coverage contains detailed information regarding documented natural iron ore mine shafts on the Mesabi Range. | |||
| Purpose | To provide location of mine shafts for mapping, documentation, monitoring, analysis, and land use planning. | |||
| Time Period of Content Date | ||||
| Currentness Reference | 2006-2008: Digitization of the Central Mesabi Range underground mine features.
2008-2010: Digitization of the Eastern Mesabi Range underground mine features. 2010-2012: Partial digitization of the Western Mesabi Range underground mine features. All features were digitized from historical mine maps dated 1903 to 1961. | |||
| Progress | Complete for the length of the Mesabi Range east of the Itasca/St. Louis county line; incomplete west of the Itasca/St. Louis county line. | |||
| Maintenance and Update Frequency | None Currently Planned | |||
| Spatial Extent of Data | Mesabi Range of Northeastern Minnesota from Nashwauk to Biwabik
| |||
| Bounding Coordinates | -93.19 -91.81 47.74 47.37 | |||
| Place Keywords | Mesabi Range, Municipalities of Nashwauk, Keewatin, Hibbing, Chisholm, Buhl, Kinney, Mountain Iron, Virginia, Eveleth, Gilbert, Biwabik, and Babbitt | |||
| Theme Keywords | Mesabi Range, iron ore, natural ore, underground mines, underground workings, shafts | |||
| Theme Keyword Thesaurus | ||||
| Access Constraints | None | |||
| Use Constraints | In no event shall the creators, custodians, or distributors of this information be liable for any damages arising out of its use (or the inability to use it). | |||
| Contact Person Information | Dale Cartwright,
Senior Engineering Specialist MN DNR Division of Lands and Minerals 1525 3rd Ave. East Hibbing, MN 55746 Phone: 218-231-8442 Fax: 218-262-7328 Email: dale.cartwright@state.mn.us | |||
| Browse Graphic | None available | |||
| Associated Data Sets | mesabi_underground_workingspy.shp, mesabi_underground_cavedln.shp, mesabi_underground_parcelspy.shp, mesabi_underground_propertiespy.shp, mesabi_underground_DatumConversion.pdf, fgdb_mesabi_undergroundmines | |||
| Section 2 | Data Quality | |||
| Attribute Accuracy | All available historical documentation. | |||
| Logical Consistency | ||||
| Completeness | Complete for all found documented natural iron ore mine shafts on the Mesabi Range from the vicinity of the city of Nashwauk through the eastern end of the Mesabi Range. This does not preclude the existence of additional or more recent mine maps that may indicate the presence of more extensive mine workings. | |||
| Horizontal Positional Accuracy | 1:24,000 | |||
| Vertical Positional Accuracy | Elevations in data set were taken from the original mine maps. | |||
| Lineage | Underground mining areas were compiled from a number of sources. Areas with documented underground mine workings were digitized on screen using a compilation of a variety of historical maps dated from 1903 to 1961, cross sections, images and tabular documentation. Other references included USX plate images of the Mesabi Range, GNIOP Mesabi Range Maps, and an assortment of historical mining maps (1200 scale to 24000) stored at various agencies and companies including: Iron Range Research Center (IRRC), MN DNR Lands and Minerals Office, MN Department of Revenue, RGGS, Meriden Engineering, Great Northern Iron Ore Properties (GNIOP), Eveleth Fee, ArcelorMittal Minorca Mine, Cliffs Natural Resources, Hibbing Taconite, USS Mintac and USS Keetac. Arcs and polygons were digitized in ESRI ArcGIS 9.2 (central Mesabi) and ESRI ArcGIS 9.3 (eastern, western Mesabi) from a geo-referenced image of a compilation of the above documentation. Compiled information was geo-referenced to survey PLS corners where available with at least 4 control points digitized at a minimum of 1:2000. Where survey control points were not available, scans were geo-referenced to other scans that were larger in scale and geo-referenced to survey points. Undocumented underground features were not mapped and are not included in this dataset. | |||
| Section 3 | Spatial Data Organization (not used in this metadata) | |||
| Section 4 | Coordinate System | |||
| Horizontal Coordinate Scheme | Universal Transverse Mercator | |||
| UTM Zone Number | 15 | |||
| Horizontal Datum | NAD83 | |||
| Horizontal Units | meters | |||
| Section 5 | Attributes | |||
| Overview | ||||
| Detailed Citation | ||||
| Table Detail: | ||||
| mesabi_underground_shaftspt | |||
| Field Name | Valid Values | Definition | Definition Source |
|---|---|---|---|
| FID | Unique Identifier | ||
| Shape | enumerated | Feature class type | |
| Point ZM | |||
| MINENAME | Name of underground mine | ||
| V_DATUM | enumerated | Base value for elevation data (See mesabi_underground_DatumConversion.pdf for details; many of the exact values for the Lake Superior Datums are unknown.) | |
| Sea Level | |||
| Lake Superior | |||
| Other | |||
| MINEFEATUR | enumerated | Type of undeground mine feature | |
| Shaft | |||
| LEVEL | Level name given on the original underground mine map | ||
| SOURCEMAP | Image name assigned to the original underground mine map from which the feature was digitized, typically of the format MMM00SSLLLNNR where MMM=mine name, 00=map date (year:1903 (03)-1961 (61); 00 or XX where unknown), SS=map source (agency or company), LLL=mine level, NN=map number of multiples with same name, R=georeferenced | ||
| ELEVATION | Elevation given on the original underground mine map (floor elevation) | ||
| FEATURENAM | Proper feature name label as given on the original underground mine map (ex.: Timber Shaft No. 7) | ||
| COLLARELEV | Collar elevation for the feature from the original underground mine map | ||
| REMARKS | Comments from research | ||
| FEATURETYP | enumerated | Sub-type of MINEFEATUR field (ex.: FEATURETYP=Main Shaft, a sub-type of MINEFEATUR=Shaft) | |
| Air Shaft | |||
| Drainage Shaft | |||
| Exploration Shaft | |||
| Hoisting Shaft | |||
| Incline Shaft | |||
| Main Shaft | |||
| Manway | |||
| Old Shaft | Noted as such on original mine map | ||
| Possible Shaft | |||
| Proposed Shaft | |||
| Pump Shaft | |||
| Secondary Shaft | Other than a main shaft | ||
| Shaft | |||
| Timber Shaft | |||
| Water Shaft | |||
| Winze | |||
| MAPSOURCE | enumerated | Agency or company from which the original underground mine maps were obtained | |
| ArcelorMittal | ArcelorMittal Minorca Mine | ||
| Cliffs Natural Resources | |||
| Dan Lynch | |||
| Dept. of Revenue | MN Department of Revenue | ||
| DNR | MN Department of Natural Resources | ||
| Eveleth Fee | Eveleth Fee Office | ||
| GNIOP | Great Northern Iron Ore Properties | ||
| IRRC | Iron Range Research Center | ||
| Keetac | Keewatin Taconite | ||
| Meriden | Meriden Engineering | ||
| Mittal | Mittal Steel (ArcelorMittal Minorca Mine) | ||
| OSMRE | US Office of Surface Mining Reclamation and Enforcement | ||
| RGGS | RGGS Lands and Minerals, LTD | ||
| US Steel | United States Steel | ||
| UTAC | United Taconite | ||
| ELEV_CEIL | Estimation of the ceiling elevation of the underground feature (This is ONLY AN ESTIMATION done for 3D modeling purposes.) | ||
| Section 6 | Distribution | |||
| Publisher | Minnesota Department of Natural Resources Division of Lands and Minerals | |||
| Publication Date | 02/28/2018 | |||
| Contact Person Information | Dale Cartwright,
Senior Engineering Specialist MN DNR Division of Lands and Minerals 1525 3rd Ave. East Hibbing, MN 55746 Phone: 218-231-8442 Fax: 218-262-7328 Email: dale.cartwright@state.mn.us | |||
| Distributor's Data Set Identifier | mesabi_underground_shaftspt.shp | |||
| Distribution Liability | The Minnesota Department of Natural Resources makes no representation or warranties, express or implied, with respect to the reuse of data provided herewith, regardless of its format or the means of its transmission. There is no guarantee or representation to the user as to the accuracy, currency, suitability, or reliability of this data for any purpose. The user accepts the data 'as is', and assumes all risks associated with its use. By accepting this data, the user agrees not to transmit this data or provide access to it or any part of it to another party unless the user shall include with the data a copy of this disclaimer. The Minnesota Department of Natural Resources assumes no responsibility for actual or consequential damage incurred as a result of any user's reliance on this data. | |||
| Ordering Instructions | ||||
| Online Linkage | None available | |||
| Section 7 | Metadata Reference | |||
| Metadata Date | 02/28/2018 | |||
| Contact Person Information | Dale Cartwright,
Senior Engineering Specialist MN DNR Division of Lands and Minerals 1525 3rd Ave. East Hibbing, MN 55746 Phone: 218-231-8442 Fax: 218-262-7328 Email: dale.cartwright@state.mn.us | |||
| Metadata Standard Name | Minnesota Geographic Metadata Guidelines | |||
| Metadata Standard Version | 1.2 | |||
| Metadata Standard Online Linkage | http://www.mngeo.state.mn.us/committee/standards/mgmg/metadata.htm | |||