Abandoned Mine Inventory for Ontario

MINES (last updated: 2022-04-29 )


GeologyOntario has moved and you should be redirected to the new GeologyOntario in 5 seconds.

Abandoned Mine Identifier: 03441

General Information

Permanent Link to this Record: 03441


Abandoned Mine Identifier: 03441

Official Name: Trethewey

Site Classification: B

Primary Commodity: Silver

Long Name: 2017590052500

Date Mine Opened:

Date Mine Closed: 1943-12-01

Mine Closure Reason: Ceasing Production - Other

Mine Closure Plan: Yes

Rehabilitation Plan: No

Mine Plans on File: Yes

Legal Jurisdiction: Mining Act

Date Record Last Modified: 2011-12-28

Location Information

Township or Area: Coleman

District: Cobalt

NTS Number: 031M05

Longitude (dd): -79.68716 | Latitude (dd): 47.40181

UTM Zone: 17 | Easting: 599058 | Northing: 5250653

Operational Access Description: Take Hudson's Bay Mine Road To Cobalt Arena; Follow Fence Around To North Side Of Property. Past Producer With 6 Shafts; Production For 1904-1943 Raised 175,666 Tons Of Ore; 216,198 Pounds Of Cobalt And 7,256,470 Ounces Of Silver. Property Covered Under The Temiskaming Mine Closure Plan (c13)


Hazard Feature Information

Mine Feature
Hazard Status
Condition
UTM Zone
Easting
Northing
Lateral Workings
Not Available
This Feature Was Not Reported In The Year 1993 Survey Team.
17
599058
5250653
Mill, Mill Foundation
Active
1993 Assessment; Mill Foundation Constructed Of Concrete Incorporating Vertical Or Steep Drops >1.5m.
17
599058
5250652
Shaft - 1 Compartment - Vertical Shaft
Active
1993 Assessment; One Compartment Shaft With Vertical Sides In Bedrock With A Timbered Collar. Surrounded By A Lundy Type Fence ~1.8m High In Moderate Condition. Gaps Under Fencing.
17
599223
5250807
Shaft - 2 Compartment - Vertical Shaft
Not Available
This Feature Was Not Reported By The Year 1993 Survey Team.
17
599058
5250653
Shaft - 2 Compartment - Vertical Shaft
Active
1993 Assessment; Two Compartment Shaft With Vertical Sides Of Unknown Dimension And Form. Surrounded By Lundy Type Fence ~1.8m High In Moderate Condition.
17
599233
5250452
Shaft - 2 Compartment - Vertical Shaft
Active
1993 Assessment; Two Compartment Shaft With Vertical Sides Of Unknown Dimension And Form. Surrounded By Lundy Type Fence ~1.8m High In Moderate Condition.
17
599203
5250432
Shaft - 2 Compartment - Vertical Shaft
Active
1993 Assessment; Two Compartment Shaft With Vertical Sides In Bedrock With A Timbered Collar. Surrounded By A Lundy Type Fence ~1.8m High In Moderate Condition. Gaps Under Fencing.
17
500088
5250681
Stope To Surface
Active
1993 Assessment; Stope, Open To Surface, Support Not Known. Surrounded By A Lundy Type Fence ~1.8m High In Moderate To Good Condition.
17
599058
5250467
Tailings - Unconfined
Active
2010 Assessment; The West Side Of The Tailings Area Consists Of Steep Banks Of Tailings That Are Revegetating Poorly And May Be Contributing To Metal Leaching From Exposure To Elements. Tailings Dam Is Not An Engineered Structure And Likely Would Not With
17
599058
5250653
Waste Rock Dump
Active
Waste Rock Pile 2010 Assessment; Adjacent To No 6 Shaft Workings. Has A Steep Face And Is Not Contoured For Revegetation.
17
599058
5250653
Waste Rock Dump
Active
2010 Assessment; No Mention Of The Slag Dump In The Cp. Should Be Located And Possibly Assessed For Metal Leaching Characteristics. 1993 Assessment; Metallurgical Slag Contained Within A Given Area.
17
599083
5250627
Winze
Not Available
This Feature Was Not Reported By The Year 1993 Survey Team.
17
599058
5250653

Mineral Deposit Identifier: MDI31M05NE00078



Terms of Use

Please be aware of the following regarding our AMIS data

The information herein is provided by MINES free of charge and for information purposes only. All information is provided "as is" without warranties or conditions of any kind either expressed or implied. In providing this AMIS database information, MINES and the Government of Ontario accept no liability and make no warranty or any representation regarding the use, accuracy, applicability, completeness, performance, availability , security or reliability of the information. MINES is not responsible for, nor does it independently verify any information, through field measurements or otherwise. It is the sole responsibility of the person choosing to receive and use this information to verify the accuracy of any information obtained from this data package. The reader is warned to under take his or her own independent investigation to validate this information. Reports provided within are not compliant with CSA standards.

Contact

Emilie Trottier
Mine Hazards Technical Specialist
Mine Rehabilitation Group
Willet Green Miller Center - Level B6
933 Ramsey Lake Road
Sudbury ON P3E 6B5
Email: emilie.trottier@ontario.ca
Phone: 705-280-8658


Ministry of Mines - ©2022, King's Printer for Ontario