Place: Minnesota - GeoBlacklight Search Results

1301. Preliminary geologic map of the Vermilion district and adjacent areas, northern Minnesota, M-5

1968. Griffin, W. L. (Geologist), Morey, G.B., Ojakangas, Richard W., and Sims, Paul K. Map showing interpretations of bedrock geology (distribution of rock at the land surface and beneath surface sediments) around the Vermilion area, ... Minnesota Geological Survey.

1302. Preliminary geological map of Minnesota

1872. Winchell, N. H. (Newton Horace), 1839-1914. 22 x 17 inches General Minnesota Maps. [s.n.]; United States.

1303. Preliminary geological map of Minnesota

1872. Winchell, N. H. (Newton Horace), 1839-1914. Geologic map of Minnesota, scale 1 inch = 20 miles. Minnesota Geological Survey.

1304. Preliminary geological map of the iron bearing rocks of the northeastern part of Minnesota

1887. Geological and Natural History Survey of Minnesota, Winchell, Alexander, 1824-1891, and Winchell, N. H. (Newton Horace), 1839-1914. Cartographic Details: Scale approximately 1:330,000 (W 92°1'--W 89°30'/N 48°14'--N 47°3'). Relief shown by hachures. Cover title: Winchell's Geolog... Geological and Natural History Survey of Minnesota ; St. Paul, Minnesota.

1305. Preliminary report on the geology of east central Minnesota, including the Cuyuna iron-ore district, Bulletin 15, Plate 1

1918. Harder, E.C. and Johnston, A. W. (A. Walfred). Map of East Central Minnesota showing location of rock outcrops (location of rocks exposed at the land surface), scale 1 inch = 10 miles. Minnesota Geological Survey.

1306. Preliminary report on the geology of east central Minnesota, including the Cuyuna iron-ore district, Bulletin 15, Plate 2

1918. Harder, E.C. and Johnston, A. W. (A. Walfred). Map of the principal part of the Cuyuna Iron-ore District, showing the distribution of known iron-bearing rocks and lines of maximum magnetic attra... Minnesota Geological Survey.

1307. Preliminary report on the geology of east central Minnesota, including the Cuyuna iron-ore district, Bulletin 15, Plate 3

1918. Harder, E.C. and Johnston, A. W. (A. Walfred). Map and sections showing the geology and workings of the Rowe Mine, Cuyuna Iron-ore District, surveyed in July, 1915, scale 1 inch = about 130 feet. Minnesota Geological Survey.

1308. Preliminary report on the geology of east central Minnesota, including the Cuyuna iron-ore district, Bulletin 15, Plate 4

1918. Harder, E.C. and Johnston, A. W. (A. Walfred). Map and sections showing the geology and workings of the Pennington, Armour No. 1, and Armour No. 2 Mines, Cuyuna Iron-ore District, Minnesota, sur... Minnesota Geological Survey.

1309. Preliminary report on the geology of east central Minnesota, including the Cuyuna iron-ore district, Bulletin 15, Plate 5

1918. Harder, E.C. and Johnston, A. W. (A. Walfred). Map and sections showing the geology and workings of the Thompson Mine, Cuyuna Iron-ore District, surveyed July, 1915, scale 1 inch = 130 miles. Minnesota Geological Survey.

1310. Primary sources of construction aggregate in the Twin Cities Seven-County Metropolitan Area, Minnesota, M-102, Plate 1, north sheet

1999. Meyer, Gary N. and Mossler, John H. Map showing primary aggregate (crushed rock, sand and gravel) sources and potential for aggregate development in the Twin cities, seven county Metr... Minnesota Geological Survey.

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1301. Preliminary geologic map of the Vermilion district and adjacent areas, northern Minnesota, M-5

1302. Preliminary geological map of Minnesota

1303. Preliminary geological map of Minnesota

1304. Preliminary geological map of the iron bearing rocks of the northeastern part of Minnesota

1305. Preliminary report on the geology of east central Minnesota, including the Cuyuna iron-ore district, Bulletin 15, Plate 1

1306. Preliminary report on the geology of east central Minnesota, including the Cuyuna iron-ore district, Bulletin 15, Plate 2

1307. Preliminary report on the geology of east central Minnesota, including the Cuyuna iron-ore district, Bulletin 15, Plate 3

1308. Preliminary report on the geology of east central Minnesota, including the Cuyuna iron-ore district, Bulletin 15, Plate 4

1309. Preliminary report on the geology of east central Minnesota, including the Cuyuna iron-ore district, Bulletin 15, Plate 5

1310. Primary sources of construction aggregate in the Twin Cities Seven-County Metropolitan Area, Minnesota, M-102, Plate 1, north sheet

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