OGS GeoData Listing

Ministry of Energy and Mines


This dataset is currently a BETA version. It will be updated on a monthly basis. We encourage users to contact us with comments, requests and suggestions: Webmaster.ndm@ontario.ca.

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Data for SHEFFIELD

33 Mineral Inventory points within 200 metres

OMI Number Status Name Primary Commodity Secondary Commodity
MDI000000003882 Occurrence Sample 98Rme-0242 Zinc
MDI31C07NW00002 Discretionary Occurrence Tamworth Marble (Structural Material)
MDI31C10SW00014 Past Producing Mine Without Reserves Or Resources A.M. Chisholm Molybdenum Sulphur/Pyrite, Nickel, Gold
MDI31C10SW00070 Discretionary Occurrence Dwyer Molybdenum
MDI31C11SE00033 Discretionary Occurrence Haley Lake Dolomite (Building Stone) Antimony
MDI31C10SW00067 Discretionary Occurrence St. Joseph Zinc
MDI31C07NW00030 Past Producing Mine Without Reserves Or Resources Sauls Clay
MDI31C10SW00049 Occurrence Kellar Molybdenum
MDI31C10SW00053 Discretionary Occurrence Burns Molybdenum
MDI31C10SW00047 Occurrence Calvert Molybdenum
MDI31C10SW00034 Discretionary Occurrence Slave Marble Marble (Structural Material)
MDI31C10SW00048 Occurrence Matthew Spratt Molybdenum
MDI31C11SE00034 Past Producing Mine Without Reserves Or Resources Mellon Lake Quarry Limestone (Building Stone)
MDI31C11SE00067 Occurrence Canadian Geary Uranium Thorium
MDI31C10SW00068 Discretionary Occurrence Molony Molybdenum
MDI31C10SW00074 Occurrence Holmstead Zinc
MDI31C10SW00008 Occurrence Foley Sulphur/Pyrite
MDI31C06NE00004 Discretionary Occurrence Clareview Marl Peat
MDI31C10SW00050 Occurrence Wager Molybdenum
MDI31C07NW00058 Discretionary Occurrence South Tamworth Hematite (Gemstones)
MDI31C10SW00054 Occurrence Oberkerk Molybdenum
MDI31C10SW00069 Occurrence Trafford Tourmaline
MDI31C07NW00022 Discretionary Occurrence Biddys Lake Granite
MDI31C11SE00066 Occurrence Zurich Uranium Thorium
MDI31C11SE00122 Developed Prospect With Reported Reserves Or Resources Mellon Lake Granite Deposit Granite
MDI31C06NE00002 Discretionary Occurrence Inglesby Lake Marl Peat
MDI000000003880 Occurrence Herring Lake Marble (Building Stone), Silver
MDI31C10SW00044 Occurrence Sheffield Hematite (Gemstones)
MDI31C10SW00046 Prospect Lennox Mines Zinc Copper, Lead
MDI31C06NE00003 Discretionary Occurrence Erinsville Peat, Marl
MDI31C11SE00027 Discretionary Occurrence Shirtcliff Lake Calcite
MDI31C11SE00081 Discretionary Occurrence West Fork Copper
MDI31C10SW00027 Discretionary Occurrence Carmen Creek Marble (Building Stone)

21 Assessment Files

Report Number Year Company Property Work Type
20000007897 2013-2013 Mitch Wilson Herring Lake Property Assaying and Analyses, Geochemical, Geological Survey / Mapping, Prospecting By Licence Holder
31C11SE2001 1999-1999 Palu-Corbelli Corp, Senator Stone Supply Ltd Bedrock Trenching, Industrial Mineral Testing and Marketing, Mechanical, Overburden Stripping
31C11SE0018 1996-1996 J J Forster Boring Other Than Core Drilling, Industrial Mineral Testing and Marketing, Overburden Stripping, Prospecting By Licence Holder
31C11SE0009 1995-1995 J J Forster Digging Pits, Overburden Stripping, Prospecting By Licence Holder
31C11SE0017 1995-1995 J J Forster Industrial Mineral Testing and Marketing, Manual Labour, Overburden Stripping, Prospecting By Licence Holder
31C15NW0020 1994-1994 Wayne Holmstead, Winfried Black Bedrock Trenching, Geochemical, Induced Polarization
31C10SW0008 1993-1993 Blake River Expl Ltd Assaying and Analyses, Compilation and Interpretation - Diamond Drilling
31C15NW0016 1993-1993 W Brack Air Photo and Remote Imagery Interpretations, Assaying and Analyses, Bedrock Trenching, Geochemical, Manual Labour, Microscopic Studies, Prospecting By Licence Holder, Recutting Claim Lines Once Every 5 Years, Regional or Reconnaissance Ground Explorat*
31C10SW0001 1992-1992 W E Holmstead & Assoc Ltd Geochemical, Overburden Drilling
31C10SW0007 1992-1992 C Wagg Compilation and Interpretation - Diamond Drilling, Geochemical, Geological Survey / Mapping, Prospecting By Licence Holder
31C10SW0009 1992-1992 W Brack Air Photo and Remote Imagery Interpretations, Bedrock Trenching, Geochemical, Geological Survey / Mapping, Manual Labour, Microscopic Studies, Prospecting By Licence Holder, Radiometric
31C10SW0002 1991-1992 C Wagg, Willow Resources Ltd Boring Other Than Core Drilling, Geochemical, Geological Survey / Mapping
31C10SW0003 1991-1991 C Wagg Electromagnetic, Geochemical, Geological Survey / Mapping, Magnetic / Magnetometer Survey, Other
31C10SW8575 1991-1991 C Wagg Diamond Drilling, Geochemical, Prospecting By Licence Holder
31C10SW0005 1985-1987 St Joe Canada Inc Airborne Electromagnetic Very Low Frequency, Geochemical
31C10SW0006 1985-1985 St Joe Canada Inc Electromagnetic Very Low Frequency, Geological Survey / Mapping, Magnetic / Magnetometer Survey
31C10SW8574 1985-1985 St Joe Canada Inc Airborne Gradiometer
31C11SE8577 1969-1969 H Dowhaluk Diamond Drilling
31C11SE8575 1968-1969 Canadian Geary Mining Corp Assaying and Analyses, Bedrock Trenching, Geological Survey / Mapping, Radiometric
31C10SW8576 1967-1967 C Mullen Compilation and Interpretation - Geology, Overburden Stripping
31C11SE0007 1964-1964 Kaladar Iron Mines Ltd Assaying and Analyses, Miscellaneous Compilation and Interpretation

44 Drill Holes

Report Number Company Drill Hole Count Elements
31C10SW0001 Blake River/Willow Resc 40
31C10SW0002 Willow Resc Ltd 4

117 Maps

Publication Year Title Scale
ARM25E 1916 South part of Frontenac County, eastern Ontario 63360
M2042 1963 Distribution of chert in gravels of southern Ontario 1013760
M08380G 1970 Geophysical series, Tichbone, Ontario, airborne magnetic, total field 63360
M2599 1992 Shaded image of vertical gravity gradient of Ontario, southern sheet 1000000
P2647 1984 Petroleum resources map, isopach Black River Group, eastern area, southern Ontario 250000
P2715 1984 Physiography of southern Ontario 600000
P2840 1986 Compilation series, geochronology compilation map for Ontario, sheet 1: southern Ontario; Grenville province and environs, Ar-Ar and K-Ar isotopic systems 1013760
P1100 1976 Mineral deposits series, mineral potential map of Ontario, 1976, southern sheet, southern Ontario and District of Nipissing 1013760
P2641 1984 Petroleum resources map, isopach Trenton Group, eastern area, southern Ontario 250000
P2301 1980 Mineral deposits series, vein silver deposits of Ontario, southern sheet, southern Ontario, and District of Nipissing 1013760
M2595 1991 Bouguer gravity of Ontario, southern sheet 1000000
ARM17B 1908 Map of the iron industry of Ontario, showing location of iron deposits, also iron and steel works 5068800
ARM13C 1904 Lake Iroquois 699145
P2841 1986 Compilation series, geochronology compilation map for Ontario, sheet 2: southern Ontario; Grenville province and environs, Rb-Sr, Nd-Sm, U-Pb, and other isotopic systems 1013760
P2591 1983 Industrial minerals of Ontario 1500000
P3321 1995 Known Kimberlites of Eastern Ontario 50000
P3533 2004 Tectonometamorphic Map of Ontario 500000,500000
M2190 1970 Ontario geology and principal minerals 4224000
M2196 1971 Ontario geological map, explanatory text, legend, diagrams, title, scale 1013760
M1927A 1927 [Ontario: index map showing maps accompanying Annual Reports 1891-1927] 2217600
M1939A 1939 [Ontario: index map showing maps accompanying Annual Reports 1891-1939] 1900800
M1946-03 1946 Geological map of the Province of Ontario None
M1953A 1953 Mineral map of the Province of Ontario 1267200
M1957A 1957 Mineral map of the Province of Ontario 1267200
M1958A 1958 Ontario Province map showing geological maps published by the Ontario Department of Mines, 1891-1958 1267200
M1958B 1958 Geological map of the Province of Ontario 1267200
M2024 1963 Ontario mineral map 1584000
M2103 1966 Ontario geology and principal minerals None
M2148 1968 Ontario mineral map 1584000
M2211 1971 Ontario, geology and principal mineral collecting localities 4224000
M2310 1974 Ontario mineral map 1584000
M2358 1976 Clay and shale deposits of Ontario 2000000
M2389 1977 Ontario, geology and principal minerals 4224000
M2391 1979 Ontario geological map, explanatory text, legend, diagrams, title, scale 0
M2440 1981 Geological highway map, northern Ontario 1600000
M2472 1985 Ontario mineral map 1584000
M2505 1986 Mines and Minerals Division, administrative areas and offices 1584000
M2506 1986 Geological highway map, northern Ontario 1600000
M2545 1991 Bedrock geology of Ontario, explanatory notes and legend 0
M2579 1992 Chart A-Archean tectonic assemblages, plutonic suites, and events in Ontario 0
M2580 1992 Chart B-Archean tectonic assemblages, plutonic suites, and events in Ontario 0
M2581 1992 Chart C-Proterozoic tectonic assemblages, plutonic suites, and events in Ontario 0
M2582 1992 Chart D-Paleozoic and Mesozoic depositional sequences and events in Ontario/Distribution of Paleozoic and Mesozoic depositional sequences 0
M2583 1992 Tectonic assemblages of Ontario, explanatory notes and legend 0
M80647 1985 Geophysical/geochemical series, airborne magnetometer survey, Kaladar-Marmora area, high resolution total field, southern Ontario 20000
M1960C 1960 Ontario limestone industries 1267200
M2053 1964 Madoc area, Ontario 126720
P1229 1977 Mineral deposits series, gold deposits of Ontario, southern sheet, southern Ontario, and District of Nipissing 1013760
M2040 1963 Distribution of siltstone in gravels of southern Ontario 1013760
M2441 1979 Geological highway map, southern Ontario 800000
P3441 2001 Precambrian Geology, Kaladar Area 50000,50000
M2587 1991 Shaded image of total magnetic field of Ontario, southern sheet 1000000
P0800 1972 Great Lakes-Ottawa River, aeromagnetic compilation map, Algoma, Sudbury, Timiskaming, Nipissing, and Manitoulin districts and southern Ontario 1013760
P2737 1985 Mineral deposits series, base metal, molybdenum, and precious metal deposits, Madoc-Sharbot Lake area, southern Ontario 125000
ARM39H 1930 Hastings County, Province of Ontario, showing locations of non-metallic mineral occurrences 250000
ARM27B 1918 Sand and gravel producing areas in southern Ontario 2217600
ARM39C 1930 Key map of part of the Province of Ontario showing location of plants for the production of heavy clay products 1013760
M08391G 1970 Geophysical series, Tweed, Ontario, airborne magnetic, total field 63360
ARM25B 1916 Part of Ontario showing the locations of lead and zinc deposits 2217600
M2130 1967 Principal clay areas of southern Ontario and the clay products industry dependent on clay 1013760
M2591 1991 Vertical magnetic gradient of Ontario, southern sheet 1000000
P2659 1984 Petroleum resources map, structure top Precambrian, eastern area, southern Ontario 250000
P2413 1981 Geological series, Paleozoic geology of the Tichborne-Sydenham area, southern Ontario 15840
P2246 1979 Geological series, geology of the Long Lake area, southern Ontario 15840
M2449 1981 Long Lake, southern Ontario 31680
M2041 1963 Distribution of shale in gravels of southern Ontario 1013760
OFM0162 1991 Extension of Grenville basement beneath southwestern Ontario, rock types and tectonic subdivisions 1013760
M2264 1972 Ontario limestone quarries, 1971 1013760
P2587 1984 Geological series, Quaternary geology, Sydenham area, southern Ontario 50000
P2692 1987 Sand and gravel assessment of Frontenac County, central sheet, Kennebec, Olden, Oso, Hinchinbrooke, Bedford townships 50000
ARM51D 1942 Grimsthorpe-Kennebec area, counties of Hastings, Lennox and Addington, and Frontenac, Ontario 63360
M80697 1985 Geophysical/geochemical series, airborne magnetometer survey, Kaladar-Marmora area, high resolution vertical gradient, southern Ontario 20000
OFR5260 1979 Uranium mineral potential charts for parts of southern Ontario 126720
P2653 1984 Petroleum resources map, structure top Shadow Lake Formation, eastern area, southern Ontario 250000
ARM45F 1936 Lake Iroquois and related ice front at the time of the Rome Outlet 316800
ARM22B 1913 Map (Actinolite-Cloyne sheet) showing geology on a belt of country 30 miles long, in the counties of Hastings, Addington and Frontenac, Province of Ontario 31680
M2254 1972 Paleozoic geology of southern Ontario showing bedrock industrial mineral producers 1013760
P1044 1975 Mineral deposits series, iron deposits of Ontario, southern sheet, southern Ontario and District of Nipissing 1013760
P2974 1987 Sand and gravel assessment of Lennox and Addington County, central sheet, Anglesea, Kaladar, Sheffield townships 50000
P1247 1977 Mineral deposits series, molybdenum deposits of Ontario, southern sheet, southern Ontario, and District of Nipissing 1013760
P0972 1975 Mineral deposits series, uranium and thorium deposits of Ontario, southern sheet, southern Ontario and District of Nipissing 1013760
P2665 1984 Petroleum resources map, isopach Shadow Lake Formation to Precambrian, eastern area, southern Ontario 250000
M1947-05 1947 Olden-Bedford area, County of Frontenac, Ontario None
OFR5227 1976 National geochemical reconnaissance map 1-1976, southern Ontario, Canada- Ontario subsidiary agreement on mineral exploration and development 250000
M2117 1966 Paleozoic geology of southern Ontario, showing bedrock industrial mineral producers 1013760
M2131 1967 Principal shale areas of southern Ontario and the clay products industry dependent on shale 1013760
M2183 1969 Ontario marl deposits 1013760
M2059 1964 Ontario limestone quarries, 1963 1013760
OFR5328 1982 Mineral potential map of Ontario, southern sheet, southern Ontario and District of Nipissing 1013760
M1976-07 1976 [withdrawn, replaced by P.1505] 253440
M2039 1963 Distribution of limestone, dolomite and Precambrian pebbles in gravels of southern Ontario 1013760
ARM25C 1916 Part of southeastern Ontario showing relations of galena-calcite-barite veins to major elements of geologic structure 500000
P2411 1981 Geological series, Paleozoic geology of the Kaladar-Tweed area, southern Ontario 50000
P1505 1978 Mineral deposits series, mineral potential, Kingston and part of Ogdensburg sheets, counties of Peterborough, Northumberland, Hastings, Prince Edward, Lennox and Addington, Frontenac, Lanark, Leeds, Grenville, Ottawa-Carleton 250000
P2976 1987 Bedrock aggregate assessment of Lennox and Addington County, south sheet, Richmond, Camden East, N. Fredericksburgh, Ernestown, Adolphustown, S. Fredericksburgh, Amherst Island townships 50000
P1063 1975 Mineral deposits series, nickel deposits of Ontario, southern sheet, southern Ontario and District of Nipissing 1013760
P2629 1984 Petroleum resources map, structure top Trenton Group, eastern area, southern Ontario 250000
P2424 1981 Mineral deposits series, uranium and thorium deposits of Ontario, southern sheet, southern Ontario and Nipissing, Muskoka, Parry Sound, Sudbury, and Manitoulin districts 1013760
M00095G 1952 Geophysical series, Kaladar, Hastings, Frontenac, Lennox and Addington Counties, Ontario, airborne magnetic, total field 63360
M2197 1971 Ontario geological map, southern sheet 1013760
P3442 2001 Precambrian Geology, Tichborne Area 50000,50000
P2615 1983 Geological series, Quaternary geology, Tweed area, southern Ontario 50000
M07052G 1987 Geophysical series, Kingston, Ontario - New York, airborne magnetic, total field 250000
M2038 1963 Sand and gravel pits in southern Ontario 1013760
M2544 1991 Bedrock geology of Ontario, southern sheet 1000000
M2556 1991 Quaternary geology of Ontario, southern sheet 1000000
P2648 1985 Geological series, Precambrian geology, Mellon Lake area, Hastings, Lennox and Addington, and Frontenac counties 15840
P2973 1987 Sand and gravel assessment of Lennox and Addington County, south sheet, Richmond, Camden East, N. Fredericksburgh, Ernestown, Adolphustown, S. Fredericksburgh, Amherst Island townships 50000
M2227 1972 Physiography of the eastern portion of southern Ontario 253440
M2392 1978 Ontario geological map, southern sheet 1013760
P2611 1985 Compilation series, geology and mineral deposits, Kingston area, southern Ontario 125000
M2418 1978 Geological highway map, southern Ontario 800000
ARM11C 1902 Outline map of the eastern Ontario gold belt 253440
P2635 1984 Petroleum resources map, structure top Black River Group, eastern area, southern Ontario 250000
M2578 1992 Tectonic assemblages of Ontario, southern sheet 1000000
M2184 1969 Sand and gravel pits in southern Ontario 1967-1968 1013760
M08392G 1970 Geophysical series, Sydenham, Ontario, airborne magnetic, total field 63360

70 Digital Data Products

Publication Year Title
MRD219 2007 Paleozoic Geology of Southern Ontario
MRD298 2012 Ontario Rhyolite Database-Northwestern Ontario and the Grenville Province
MRD224 2007 Geochemical Data from Carbonate Rocks from the Central Metasedimentary Belt, Grenville Province, Ontario
MRD018 1991 Ternary Plots Using Lotus 1-2-3
MRD022 1996 Grade-Tonnage Data for the Mineral Deposits Models Described in OFR 5945
MRD037 1998 Ontario Geological Survey Poster Displays - PDAC March 1998
MRD075 2001 Geochronology Data for Ontario
MRD086 2001 A Compilation of References for Kimberlite, Diamond and Related Topics
MRD100 2002 Magmatic Ni-Cu +/- PGE Occurrences and Mafic-Ultramafic Bodies in Ontario
MRD101 2003 Summary of Clinopyroxene Data
MRD126-REV1 2011 1:250 000 Scale Bedrock Geology of Ontario
MRD134 2004 Detectability of Mineral Deposits with Airborne Gravity Gradiometry
MRD138 2004 Airborne Hyperspectral Surface Mapping over Exposed and Covered Mineral Belts in Ontario
MRD139 2004 Demonstration Surveys of the Distributed Acquisition (MT/IP) Method Earth Imaging Technology
MRD142 2004 Lineament Extraction from Digital Elevation Model (DEM) for the Province of Ontario
MRD153 2005 Ontario Geochemistry and Indicator Mineral Database
MRD164 2005 Three Dimensional Surficial Geochemistry
MRD165 2005 Use of a Soil Gas Hydrocarbon Technique to Differentiate Barren Graphitic and Sulphidic Conductors from Ore-Bearing Conductors
MRD166 2005 Gedex Airborne Gravity Gradiometer (AGG) System
MRD169 2005 Development of a High Bandwidth Frequency Domain EM System
MRD170 2005 Geochemical Detection of Disseminated Palladium Mineralization in Ontario
MRD172 2005 Development of Methods and Technology for the Discovery of New Resources Around Existing Mine Infrastructure
MRD175 2005 Downhole Seismic Imaging Method: A New Tool for Deep Mineral Exploration
MRD176 2005 Development and Demonstration of Novel Field-Portable Sample Preparation Methods for On-Site Geochemical Analysis
MRD177 2005 Detectability of Mineral Deposits With Potential Field Methods
MRD178 2005 Development and Evaluation of a 3D Vector Orientation Software Illustrated With Triaxial Gradient Magnetic Data
MRD179 2005 Development of a Relational Physical Rock Property Database
MRD181 2005 Detectability of Mineral Deposits With Electrical Resistivity and Induced Polarization Methods
MRD183 2006 Development of a New Helicopter TEM System for Mineral Exploration
MRD185 2005 A New Aircraft Compensation System for Magnetic Terrains
MRD216 2007 Geology of the Canadian Shield in Ontario: An Update
MRD249 1987 Whole-Rock Geochemistry of Komatiitic and Ultramafic Rocks: Data from the Komatiite Database Project
MRD250 1993 Data from the PETROCH Lithogeochemical Database
MRD252 1995 Digital Bedrock Mapping Symbols
MRD253 2000 Digital Line Standards for Maps
MRD269 2010 Abstracts, 11th International Platinum Symposium, 21-24 June 2010, Sudbury, Ontario, Canada
MRD270 1989 OGS FIELDLOG (circa 1989) - Software for Geologists
MRD371 2018 Ontario Specific Gravity Data for Bedrock Samples Acquired from 1970 to 2014
GDS1035 2003 Single Master Gravity and Aeromagnetic Data for Ontario, ASCII, Excel and Access formats.
GDS1036 2003 Single Master Gravity and Aeromagnetic Data for Ontario, Geosoft Format
MRD199 2006 Modern Alluvium and Till Data Release, Tweed Area, Southeastern Ontario
GRS019 2019 A Three-Dimensional Geological Model of the Paleozoic Bedrock of Southern Ontario
GRS017 2018 Geospatial Distribution of Selected Chemical, Bacteriological and Gas Parameters Related to Groundwater in Southern Ontario
GRS020 2022 Interpolation of Tritium Concentrations in Shallow, Modern Groundwaters of Southern Ontario
GeochrON 2019 Geochronology Inventory of Ontario2019
ARO 2021 Aggregate Resources of Ontario (ARO2020)
MRD092 2001 Results of Firing and Properties Testing, Queenston Formation Shale, Southern Ontario
MRD251 1990 Data Relating to the Economic Geology and Geochemistry of Carbonate Rocks, Grenville Province, Southeastern Ontario
MRD297 2012 Aggregate Test Results for Various Rock Types in Ontario
MRD311 2014 Geological, Geochemical, Geophysical and Petrographic Data Related to a Study of Plutons Intruded Circa 1090 to 1065 Ma in the Southeastern Central Metasedimentary Belt, Grenville Province
MRD207 2006 Bedrock Topography and Overburden Thickness Mapping, Southern Ontario
MRD228 2007 Physiography of Southern Ontario
GRS005 2008 Karst of Southern Ontario and Manitoulin Island
MRD107 2002 Geochemistry of Selected Ordovician and Silurian Shale Samples from Outcrops, Quarries and Drill Cores, Southern Ontario
MRD302 2012 Preliminary Data Release, Southern Ontario Stream Sediment Geochemistry Survey
MRD276 2011 Regional Structure and Isopach Maps of Potential Hydrocarbon-Bearing Strata for Southern Ontario
MRD273-REV2 2019 Ontario Precambrian Bedrock Magnetic Susceptibility Geodatabase for 2001 to 2017
MRD204 2006 An Updated Guide to the Subsurface Paleozoic Stratigraphy of Southern Ontario
MRD283-REV2 2021 Ambient Groundwater Geochemical and Isotopic Data for Southern Ontario, 20072019
MRD115 2002 Geological and Lithogeochemical Data from Mafic-Ultramafic Bodies in Ontario as a Guide to Exploration for Platinum Group Element (PGE) Deposits: Operation Treasure Hunt
MRD128-REV 2010 Surficial Geology of Southern Ontario
EDS022 1993 Topographic Base Map: Seamless Coverage of the Province of Ontario
EDS006-REV 2000 Bedrock Geology, Seamless Coverage of the Province of Ontario
EDS011 1993 Tectonic Assemblages, Seamless Coverage of the Province of Ontario
EDS012 2004 Townships and Unorganized Area Fabric for Ontario
EDS013-REV1 2005 Ontario Drill Hole Database--December 2005 Release
EDS014-REV 2000 Quaternary Geology, Seamless Coverage of the Province of Ontario
MRD395 2021 Pyrrhotite Distribution in Ontario: Near-Surface Occurrences and Discussion of Deleterious Effects in Concrete
ODHD 2016 Ontario Drill Hole Database
GRS021 2023 Ambient Groundwater Geochemistry Field Methods and Procedures

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Ministry Contact Information

For detailed information regarding geoscience data in this area please contact the Southern Ontario District Resident Geologist Office.