Mesabi Range Underground Mine Workings
Go to Section:- Overview
- Data Quality
- Data Organization
- Coordinate System
- Attributes
- Distribution - Get Data
- Metadata Reference
Section 1: Overview
Originator:Minnesota Department of Natural Resources (MN DNR) Division of Lands and Minerals
Title:
Mesabi Range Underground Mine Workings
Abstract:
The Mesabi Range Underground Mine Workings coverage contains detailed information regarding documented underground mine workings (shafts, drifts, mined extents, more) on the Mesabi Range.
Purpose:
To provide location of underground mine workings in polygon format 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, drifts, caved areas, mined extents
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_shaftspt.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:
Includes all found documented natural iron ore underground mine workings (shafts, drifts, mined extents, caved areas, more) 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
Vertical Datum:
NAVD88
Vertical Units:
feet
Depth Datum:
Mean sea level or Lake Superior Datum (See mesabi_underground_DatumConversion.pdf for details: the elevation used for Lake Superior Datum can change for different mines).
Depth Units:
feet
Section 5: Attributes
Overview:
Detailed Citation:
Table Detail:
mesabi_underground_workingspy| Field Name | Valid Values | Definition | Definition Source |
|---|
| FID | - | Unique Identifier | |
| Shape | enumerated | Feature class type | |
| Polygon 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 | |
| Air Raise | Vertical passageway mined upward to a higher level or to surface for ventilation | |
| Bulkhead | | |
| Caved Extent | Extent of caving as shown on original mine surface map | |
| Conveyor | | |
| Drift | Horizontal passageway for mining | |
| Inclined Shaft | Non-vertical shaft | |
| Milling Pit | Surface pit excavated from which ore is subsequently mined by caving into "glory holes" raised up from drifts driven underground below the orebody | |
| Mined Extent | Mined out areas as shown on original mine maps | |
| Old Workings? | Mined out areas denoted on original mine maps from earlier mining activity | |
| Pipeline | | |
| Powder House | Underground room housing blasting materials | |
| Raise | Typically a vertical passage mined upward (raised) from one level to one or more higher levels | |
| Rock | Non-ore area left unmined | |
| Shaft | Typically a vertical passageway from surface to the bottom of the orebody | |
| Surface Cave | Area of surface subsidence from mining activity below | |
| Timber Slide | Inclined passageway for delivering shoring timbers to lower mining levels | |
| Winze | Typically a vertical passage mined downward from one level to one or more lower levels | |
| 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 | - | Sub-type of MINEFEATUR field (ex.: FEATURETYP=Main Shaft, a sub-type of MINEFEATUR=Shaft) | |
| 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 | |
| Hibbing Taconite | | |
| 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 | | |
| UTAC | United Taconite | |
| ELEV_CEIL | - | Estimation of the ceiling elevation of the underground feature (This is ONLY AN ESTIMATION done for 3D modeling purposes.) | |
| METHOD | - | Underground mining method used | |
| ELEV_SLEVE | - | Original elevation adjusted to sea level (see MesabiUG_DatumConversion.pdf) | |
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_workingspy.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.
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