An Experimental Study of a Flat Slab Floor Reinforced with Welded Wire Fabric

Reinforced Concrete Reserach CouncilOffice of the Chief of Engineers, U.S. Army.General Services Administration, Public Buildings ServiceHeadquarters, U.S. Air Force. Contract AF 33(658)-47U.S. Navy, Engineering Division. Bureau of Yards and Docks. NBy 3763

The Effects of Pattern Loadings on Reinforced Concrete Floor Slabs

Reinforced Concrete Reserach CouncilOffice of the Chief of Engineers, U.S. Army.General Services Administration, Public Buildings ServiceHeadquarters, U.S. Air Force, Directorate of Civil Engineering.U.S. Navy, Engineering Division. Bureau of Yards and Docks. NBy 3763

Preliminary bedrock geologic map of parts of Koochiching, Itasca, and Beltrami Counties, north-central Minnesota

Preliminary bedrock geology maps of an area of northcentral Minnesota. Explanatory text and two map sheets. Plate 1-Database; Plate 2-Bedrock geology, scale 1:250,000. Superseded by Minnesota Geological Survey publication M-67

OFR 07-03, Bedrock and Quaternary geology of the Central Mesabi Iron Range, northeastern Minnesota

Nine printable PDF maps best convey the new the data and interpretations gathered from this study and are grouped within the appropriately labeled .zip file. The GIS files used to make these maps, together with photos of selected features from the area, are contained within the .zip file titled "Supplementary GIS and Project Data". The PowerPoint presentation describes and illustrates much of this project, and summarizes work conducted over the last 4 biennia to provide geological characterization of the Mesabi Iron Range.The short movie (bath_surf2.avi), shows the bedrock topography including bathymetry of seven pit lakes in the Chisholm focused study area. The Readme provides more information and data concerning GIS files, the short movie, and the PDF maps.This document summarizes work conducted by the Minnesota Geological Survey (MGS) in support of broader goals of the Central Iron Range Initiative (CIRI) project entitled “Hydrology, habitat, and energy potential of mine lakes.” Those goals are to establish ultimate mine water elevations and outflows, design optimum mine land configurations for fish habitat and lakeshore development, and evaluate wind/pumped hydropower potential. The MGS project was designed to provide CIRI project partners with technical data about the bedrock and unconsolidated sediments that exist in the central iron range. The data augment previous publications of the MGS, and were used by the Minnesota Department of Natural Resources to create hydrologic models that are described in a separate report. Much of the MGS data were provided to the partners during the course of the project as interim products and technical guidance. MGS staff described, sampled, measured structures, and photographed materials at more than 300 new field observation points. Consequent efforts included textural analyses of 286 sediment samples; acquisition, interpretation, and digital capture of about 125 new drilling records; coordination with the partners and mining company staff; and the digitization and interpretation of data to produce interim and final products. This Open-File Report represents final products submitted to LCCMR as a summary of those data

RI-53 Contributions to the geology of the Virginia Horn area, St. Louis county, Minnesota

Companion to M-85 and M-86

M-157 Land-surface topography of the eastern half of the Mesabi Iron Range, northern Minnesota; 1899 and 1999

3 pls. Scale 1:100,000. Pl. 1, 1899 map of land-surface topography, surface hydrology, and infrastructure; pl. 2, 1999 map of land surface topography,surface hydrology, and infrastructure; pl. 3, shaded-relief map showing elevation differences between the 1899 and 1999 land-surface topography

Mineral potential assessment of northern St. Louis County, southeastern Koochiching County and northeastern Itasca County, Minnesota

9 pls. Scale 1:100,000. Pl. 1, total field magnetic anomaly reduced to pole; pl. 2, second vertical derivative of the total field magnetic anomaly; pl. 3, second vertical derivative of the simple bouguer anomaly; pl. 4, geophysical interpretation; pl. 5, drillhole and outcrop location; pl. 6, bedrock geology; pl. 7, geophysical model cross-sections; pl. 8, depth to magnetic basement; pl. 9, mineral potential

S-22, Geologic Map of Minnesota, Precambrian Bedrock Geology

Bedrock map includes faults, form lines inferrred from geophysical data, dike locations and types, and geologic interpretations based on geophysics of the area of Minnesota that extends into Lake Superior.This map of the Archean and Proterozoic (Precambrian) geology of Minnesota is identical with MGS State Map S-21, except it portrays an interpretation beneath Phanerozoic (Paleozoic and Mesozoic) strata inferred from geophysical maps and drill core

OFR91-01, Preliminary bedrock geologic map of the Cook to Side Lake area, west-central St. Louis County, Minnesota

General geologic information associated with the geologic map for the Cook to Side Lake area of St. Louis County, Minnesota, scale 1:250,000. Only the aeromagnetic map and the correlation of map units diagram included. Superseded by Minnesota Geological Survey publication M-75