OGS GeoData Listing

Ministry of 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.

Download this data listing in Excel format: Download Excel file

Data for MARIA

3 Mineral Inventory points within 200 metres

OMI Number Status Name Primary Commodity Secondary Commodity
MDI000000001344 Prospect Mcvittie Group 1 Graphite
MDI31L01SE00002 Developed Prospect With Reported Reserves Or Resources Bissett Creek Graphite Project Graphite
MDI31L01NE00003 Prospect Mcvittie Group 2 Graphite

21 Assessment Files

Report Number Year Company Property Work Type
20000008210 2013-2014 Robert Anthony Brunette Brunette-Boudreau Project Claim Group Assaying and Analyses, Geological Survey / Mapping, Overburden Stripping, Prospecting By Licence Holder, Radiometric
20000007451 2012-2012 Eric Yves Boudreau, Robert Anthony Brunette Assaying and Analyses, Overburden Stripping, Prospecting By Licence Holder, Radiometric
20000009047 2012-2013 Robert Anthony Brunetteeric Yves Boudrea Brunette-Boudreau Project Claim Group Assaying and Analyses, Geological Survey / Mapping, Overburden Stripping, Prospecting By Licence Holder, Radiometric
20000005911 2011-2011 Knight Piesold Environmental Studies
20000006206 2011-2011 Northern Graphite Corp
20000007307 2011-2012 Eric Yves Boudreau, Robert Anthony Brunette Assaying and Analyses, Prospecting By Licence Holder
20000007394 2011-2012 Northern Graphite Corp Bisset Creek Metallurgical Testing and Bulk Sampling
20000004724 2010-2010 Northern Graphite Corp Geological Survey / Mapping
20000002540 2007-2007 Canadian Industrial Minerals Corp Mechanical
20000001585 2006-2006 Industrial Minerals Canada Inc Mechanical, Prospecting By Licence Holder
20000000635 2004-2004 Industrial Minerals Canada Inc Assaying and Analyses, Benefication Studies
31L01NE2001 2002-2003 Industrial Minerals Canada Inc Benefication Studies
31L01NE0003 1992-1992 North Coast Industries Ltd Bedrock Trenching, Overburden Drilling, Overburden Stripping
31L01NE0001 1990-1990 North Coast Industries Ltd Metallurgical Testing and Bulk Sampling, Other
31L01NE0002 1990-1990 North Coast Industries Ltd Metallurgical Testing and Bulk Sampling, Other
31L01NE0004 1985-1985 Princeton Resources Corp Assaying and Analyses, Bedrock Trenching, Diamond Drilling, Geological Survey / Mapping
31L01NE0006 1985-1985 Hartford Resources Inc Diamond Drilling
31L01NE0051 1985-1986 Princeton Resources Corp Assaying and Analyses, Benefication Studies, Compilation and Interpretation - Ground Geophysics, Diamond Drilling, Geological Survey / Mapping, Industrial Mineral Testing and Marketing, Metallurgical Testing and Bulk Sampling, Microscopic Studies
31L01NE0005 1984-1984 Hartford Resources Inc Diamond Drilling
31L01NE0007 1984-1984 Donegal Resources Ltd, Princeton Resources Corp Bedrock Trenching, Mechanical, Overburden Stripping
31L08SE0001 1983-1983 E J Blanchard Benefication Studies, Electromagnetic Very Low Frequency, Other

600 Drill Holes

Report Number Company Drill Hole Count Elements
31L01NE0051 Princeton Resc Corp 535
31L01NE0003 North Coast Industries Ltd 64
31L01NE0005 Hartford Resc Inc 1

148 Maps

Publication Year Title Scale
M2543 1991 Bedrock geology of Ontario, east-central sheet 1000000
P1669 1978 Geophysical series, [airborne gamma-ray spectrometry], line 461, North Bay sheet 250000
OFR5327 1982 Mineral potential map of Ontario, east central sheet, districts of Thunder Bay, Algoma, Cochrane, Sudbury, Timiskaming and Nipissing 1013760
P1510 1978 Mineral deposits series, Ontario mineral potential, parts of North Bay, Deep River and Ville-Marie sheets, districts of Nipissing, Parry Sound and County of Renfrew 250000
P2690 1986 Sand and gravel assessment of Renfrew County, Stonecliffe sheet, Clara, Maria, Head townships 50000
M2042 1963 Distribution of chert in gravels of southern Ontario 1013760
P1676 1978 Geophysical series, [airborne gamma-ray spectrometry], line 531, North Bay sheet 250000
P1043 1975 Mineral deposits series, iron deposits of Ontario, east central sheet, districts of Thunder Bay, Algoma, Cochrane, Sudbury, Timiskaming and Nipissing 1013760
P1683 1978 Geophysical series, [airborne gamma-ray spectrometry], line 601, North Bay sheet 250000
M2599 1992 Shaded image of vertical gravity gradient of Ontario, southern sheet 1000000
P1661 1978 Geophysical series, [airborne gamma-ray spectrometry], line 381, North Bay sheet 250000
P2715 1984 Physiography of southern Ontario 600000
P1679 1978 Geophysical series, [airborne gamma-ray spectrometry], line 561, North Bay sheet 250000
P1228 1977 Mineral deposits series, gold deposits of Ontario, east central sheet, districts of Thunder Bay, Algoma, Cochrane, Sudbury, Timiskaming and Nipissing 1013760
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
M2555 1991 Quaternary geology of Ontario, east-central sheet 1000000
P2301 1980 Mineral deposits series, vein silver deposits of Ontario, southern sheet, southern Ontario, and District of Nipissing 1013760
P1666 1978 Geophysical series, [airborne gamma-ray spectrometry], line 431, North Bay sheet 250000
P1653 1978 Geophysical series, (airborne gamma-ray spectrometric), eU/eTh ratio, North Bay, Ontario-Quebec, [GSC] map 36231G 250000
P1674 1978 Geophysical series, [airborne gamma-ray spectrometry], line 511, North Bay sheet 250000
P2842 1986 Compilation series, geochronology compilation map for Ontario, sheet 3: east-central Ontario, all isotopic systems 1013760
M2595 1991 Bouguer gravity of Ontario, southern sheet 1000000
P1658 1978 Geophysical series, [airborne gamma-ray spectrometry], line 351, North Bay sheet 250000
ARM17B 1908 Map of the iron industry of Ontario, showing location of iron deposits, also iron and steel works 5068800
P1197 1976 Geological series, Mattawa-Deep River area (eastern half), District of Nipissing and County of Renfrew 63360
P1654 1978 Geophysical series, (airborne gamma-ray spectrometric), eU/K ratio, North Bay, Ontario-Quebec, [GSC] map 36231G 250000
P1657 1978 Geophysical series, [airborne gamma-ray spectrometry], line 342 (341), North Bay sheet 250000
P1671 1978 Geophysical series, [airborne gamma-ray spectrometry], line 481, North Bay sheet 250000
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
M01447G 1962 Geophysical series, Des Joachims, Ontario - Quebec, airborne magnetic, total field 63360
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
P1685 1978 Geophysical series, [airborne gamma-ray spectrometry], line 622, North Bay sheet 250000
M2441 1979 Geological highway map, southern Ontario 800000
P1246 1977 Mineral deposits series, molybdenum deposits of Ontario, east central sheet, districts of Thunder Bay, Algoma, Cochrane, Sudbury, Timiskaming, and Nipissing 1013760
M01458G 1965 Geophysical series, Maganasipi River, Quebec - Ontario, airborne magnetic, total field 63360
M07066G 1965 Geophysical series, North Bay, Ontario - Quebec, airborne magnetic, total field 253440
M2587 1991 Shaded image of total magnetic field of Ontario, southern sheet 1000000
P1687 1978 Geophysical series, [airborne gamma-ray spectrometry], line 641, North Bay sheet 250000
P1675 1978 Geophysical series, [airborne gamma-ray spectrometry], line 521, North Bay sheet 250000
P0800 1972 Great Lakes-Ottawa River, aeromagnetic compilation map, Algoma, Sudbury, Timiskaming, Nipissing, and Manitoulin districts and southern Ontario 1013760
P2300 1980 Mineral deposits series, vein silver deposits of Ontario, east central sheet, districts of Thunder Bay, Algoma, Cochrane, Sudbury, Timiskaming, and Nipissing 1013760
P1665 1978 Geophysical series, [airborne gamma-ray spectrometry], line 422, North Bay sheet 250000
P2426 1982 Mineral deposits series, uranium and thorium deposits of Ontario, east central sheet, Thunder Bay, Algoma, Cochrane, Sudbury, Timiskaming, and Nipissing districts 1013760
ARM39C 1930 Key map of part of the Province of Ontario showing location of plants for the production of heavy clay products 1013760
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
P1650 1978 Geophysical series, (airborne gamma-ray spectrometric), potassium (K), North Bay, Ontario-Quebec, [GSC] map 36231G 250000
P2564 1982 Industrial minerals of the Algonquin region, Algonquin Park area, Nipissing District and southern Ontario 125000
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
OFR5260 1979 Uranium mineral potential charts for parts of southern Ontario 126720
P1680 1978 Geophysical series, [airborne gamma-ray spectrometry], line 571, North Bay sheet 250000
P1673 1978 Geophysical series, [airborne gamma-ray spectrometry], line 501, North Bay sheet 250000
P1668 1978 Geophysical series, [airborne gamma-ray spectrometry], line 451, North Bay sheet 250000
P1664 1978 Geophysical series, [airborne gamma-ray spectrometry], line 411, North Bay sheet 250000
M2254 1972 Paleozoic geology of southern Ontario showing bedrock industrial mineral producers 1013760
P1662 1978 Geophysical series, [airborne gamma-ray spectrometry], line 391, North Bay sheet 250000
P1684 1978 Geophysical series, [airborne gamma-ray spectrometry], line 611, North Bay sheet 250000
P1044 1975 Mineral deposits series, iron deposits of Ontario, southern sheet, southern Ontario and District of Nipissing 1013760
P1247 1977 Mineral deposits series, molybdenum deposits of Ontario, southern sheet, southern Ontario, and District of Nipissing 1013760
P1686 1978 Geophysical series, [airborne gamma-ray spectrometry], line 631, North Bay sheet 250000
P0972 1975 Mineral deposits series, uranium and thorium deposits of Ontario, southern sheet, southern Ontario and District of Nipissing 1013760
P0971 1975 Mineral deposits series, uranium and thorium deposits of Ontario, east central sheet, districts of Thunder Bay, Algoma, Cochrane, Sudbury, Timiskaming, and Nipissing 1013760
M2590 1991 Vertical magnetic gradient of Ontario, east-central sheet 1000000
M2586 1991 Shaded image of total magnetic field of Ontario, east-central sheet 1000000
P1682 1978 Geophysical series, [airborne gamma-ray spectrometry], line 591, North Bay sheet 250000
P0452 1970 Aeromagnetic maps of carbonatite-alkalic complexes in Ontario 4224000
P1681 1978 Geophysical series, [airborne gamma-ray spectrometry], line 581, North Bay sheet 250000
P1655 1978 Geophysical series, (airborne gamma-ray spectrometric), eTh/K ratio, North Bay, Ontario-Quebec, [GSC] map 36231G 250000
P1651 1978 Geophysical series, (airborne gamma-ray spectrometric), equivalent uranium (eU), North Bay, Ontario-Quebec, [GSC] map 36231G 250000
M2117 1966 Paleozoic geology of southern Ontario, showing bedrock industrial mineral producers 1013760
M2393 1978 Ontario geological map, east central sheet 1013760
M2594 1991 Bouguer gravity of Ontario, east-central sheet 1000000
M2131 1967 Principal shale areas of southern Ontario and the clay products industry dependent on shale 1013760
M2183 1969 Ontario marl deposits 1013760
P1660 1978 Geophysical series, [airborne gamma-ray spectrometry], line 371, North Bay sheet 250000
M2598 1992 Shaded image of vertical gravity gradient of Ontario, east-central sheet 1000000
M2059 1964 Ontario limestone quarries, 1963 1013760
OFR5328 1982 Mineral potential map of Ontario, southern sheet, southern Ontario and District of Nipissing 1013760
P2609 1983 Geological series, Quaternary geology, Algonquin Park, northeastern part, Nipissing District and Renfrew County 50000
P1670 1978 Geophysical series, [airborne gamma-ray spectrometry], line 471, North Bay sheet 250000
M2039 1963 Distribution of limestone, dolomite and Precambrian pebbles in gravels of southern Ontario 1013760
P0452-REV 1970 Aeromagnetic maps of carbonatite-alkalic complexes in Ontario 4224000
P1672 1978 Geophysical series, [airborne gamma-ray spectrometry], line 491, North Bay sheet 250000
P1063 1975 Mineral deposits series, nickel deposits of Ontario, southern sheet, southern Ontario and District of Nipissing 1013760
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
P1649 1978 Geophysical series, (airborne gamma-ray spectrometric), total count, North Bay, Ontario-Quebec, [GSC] map 36231G 250000
M2197 1971 Ontario geological map, southern sheet 1013760
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
P1099 1976 Mineral deposits series, mineral potential map of Ontario, 1976, east central sheet, districts of Thunder Bay, Algoma, Cochrane, Sudbury, Timiskaming, and Nipissing 1013760
M2577 1992 Tectonic assemblages of Ontario, east-central sheet 1000000
P1656 1978 Geophysical series, [airborne gamma-ray spectrometry], line 332 (331), North Bay sheet 250000
M2198 1971 Ontario geological map, east central sheet 1013760
P1663 1978 Geophysical series, [airborne gamma-ray spectrometry], line 401, North Bay sheet 250000
P1659 1978 Geophysical series, [airborne gamma-ray spectrometry], line 361, North Bay sheet 250000
M2392 1978 Ontario geological map, southern sheet 1013760
M1976-02 1976 [withdrawn, replaced by P.1510] 253440
M5043 1979 Deep River, NTS 31K/SW, data base map, northern Ontario engineering geology terrain study 100000
P1062 1977 Mineral deposits series, nickel deposits of Ontario, east central sheet, districts of Thunder Bay, Algoma, Cochrane, Sudbury, Timiskaming, and Nipissing 1013760
P2703 1984 Geological series, Quaternary geology, Algonquin Park, north central part, Nipissing District 50000
P2565 1982 Industrial minerals of the Algonquin region, Pembroke area, southern Ontario 125000
P1652 1978 Geophysical series, (airborne gamma-ray spectrometric), equivalent thorium (eTh), North Bay, Ontario-Quebec, [GSC] map 36231G 250000
M2228 1975 Physiography of the Georgian Bay-Ottawa Valley area 253440
M2418 1978 Geological highway map, southern Ontario 800000
M01457G 1965 Geophysical series, Brent, Ontario - Quebec, airborne magnetic, total field 63360
M07065G 1981 Geophysical series, Deep River, Quebec - Ontario, airborne magnetic, total field 250000
M2578 1992 Tectonic assemblages of Ontario, southern sheet 1000000
P1678 1978 Geophysical series, [airborne gamma-ray spectrometry], line 551, North Bay sheet 250000
M2184 1969 Sand and gravel pits in southern Ontario 1967-1968 1013760
P1677 1978 Geophysical series, [airborne gamma-ray spectrometry], line 541, North Bay sheet 250000
M5042 1979 Mattawa, NTS 31L/SE, data base map, northern Ontario engineering geology terrain study 100000
P1667 1978 Geophysical series, [airborne gamma-ray spectrometry], line 441, North Bay sheet 250000

56 Digital Data Products

Publication Year Title
MRD298 2012 Ontario Rhyolite Database-Northwestern Ontario and the Grenville Province
MRD160 2005 Digital Northern Ontario Engineering Geology Terrain Study (NOEGTS)
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
MRD286 2011 Geological, Geochemical and Geophysical Data Related to the Zinc Scoping Project, Grenville Province
MRD254 2002 Industrial Mineral Assessment and Sampling of Mica in Central and Eastern Ontario: Testing Results
GeochrON 2019 Geochronology Inventory of Ontario2019
ARO 2021 Aggregate Resources of Ontario (ARO2020)
MRD297 2012 Aggregate Test Results for Various Rock Types in Ontario
MRD228 2007 Physiography of Southern Ontario
MRD273-REV2 2019 Ontario Precambrian Bedrock Magnetic Susceptibility Geodatabase for 2001 to 2017
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

Report an Error

We are continuously updating our data. If you notice errors please contact us: Webmaster.ndm@ontario.ca.

Terms of Use

Please review our Terms of Use agreement for this data product.

Ministry Contact Information

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