Mesabi Range Outlines of Underground Caved Areas
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 Outlines of Underground Caved Areas
Abstract:
The Mesabi Range Outlines of Underground Caved Areas data layer contains information regarding documented outlines of underground caved areas designated on mine maps within the Mesabi Range. These outlines were open-ended and could not be included in the polygon coverage Mesabi Range Underground Mine Workings (mesabi_underground_workingspy.shp).
Purpose:
This line feature layer was created to document outlines of underground caved areas that could not be included in the Mesabi Range Underground Mine Workings coverage (mesabi_underground_workingspy.shp) because the features could not be enclosed into polygons.
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.
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 mine workings, caved area
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_workingspy.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 underground caved area outlines east of the Itasca/St. Louis county line on the Mesabi Range that could not be enclosed into polygons. 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_caved_ln| Field Name | Valid Values | Definition | Definition Source |
|---|
| FID | - | Unique Identifier | |
| Shape | enumerated | Feature class type | |
| Polyline 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 | - | Type of underground mine feature | |
| LEVEL | - | Mine level name as 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 (floor elevation) as given on the original mine map | |
| REMARKS | - | Comments from research | |
| ELEV2 | - | Elevation (floor) as given on additional original mine map used to digitize feature | |
| MAPSOURCE | enumerated | Agency or company from which the original underground mine maps were obtained | |
| Cleveland-Cliffs Lerch Bros. | | |
| Cliffs Natural Resources | | |
| 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 | |
| RGGS | RGGS Lands and Minerals, LTD | |
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_cavedln.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