Operational Access Description: Access: Proceed On Hwy 66 East Of Larder Lake North For 1.5km On The Larder Lake Station Road. Turn Right After Crossing The Onr Tracks And Proceed Northeast For 250m. Turn East And Cross The Railway Tracks And Proceed East For 250m To The Mine Gate History: Shaft Sinking Began In 1921 And Continued Through 1922. A Mill Was Constructed In 1926, And Was In Production Until The Mine Closed In The Spring Of 1928. In This Time Period, The No. 1, Had Reached A Depth 0f 1200', With Lateral Work On Levels At Approximately 125' Intervals. The No. 2 Shaft Had Been Sunk To 1050' By 1928, With Lateral Workings On Seven Levels. Omega Gold Mines Commenced Milling Operations In Early 1936, And Was In Continuous Production Until The Mine Closed Again In 1947. In This Time Frame The No. 1 Was Deepened, And A Winze From The 1550' To The 2000' Level, Permitted The Opening Up Of 3 New Levels. Total Ore Production Amounted To 1,615,081 Tons Which Was Then Valued At $7,788,606. The Primary Commodity Was Gold.
Hazard Feature Information
Mine Feature
Hazard Status
Condition
UTM Zone
Easting
Northing
Mill, Mill Foundation
Active
Mill Foundation
2012 Ir: Located Along The Northeast Section Of The East Tailings. The Foundations Are Extensive And Spread Over A Large Area. Steel Pins Protruding From The Concrete And Uneven Surfaces Are Common Within This Cluster Of Foundations. Ma
17
596707
5330216
Miscellaneous Structures
Not A Hazard
Number 2 Shaft Hoist Room Foundation
2012 Ir: Located Along The North Side Of The Open Pit, There Are Multiple Concrete Foundations. Steel Pins Protruding From The Concrete And Uneven Surfaces.
2000 Assessment; Number 2 Shaft Hoist Room Foundation
17
596860
5330302
Miscellaneous Structures
Active
Crusher Foundations
2012 Ir: Crusher Foundations Were Located On The North Side Of A Trail Located On The North Of The Open Pit. Miltiple Concrete Foundations And Slabs Were Observed Within This Area. Steel Pins Protruding Fom The Concrete, Uneven Surf
17
596807
5330292
Open Pit
Active
Southwest Zone Pit
2012 Ir: The Open Pit Is Partially Flooded And Is Not In A Secure State. There Is Part Of A Non-standard Boulder Fence Loacted On The South Side Of The Pit. There Is No Reasonable Egress From The Pit. The Pit Is Readily Accessible
17
596786
5330222
Raise To Surface
Active
Raise R02
2012 Ir: The Concrete Cap Appeared To Be In Fair Condition. Small Gaps Between The Bottom Of The Cap And The Upper Elevation Of The Surrounding Soil Were Observed
Other Features Reported But For Which We Have No Coordinates
See Report For
17
597041
5330272
Tailings - Confined
Active
East Tailings
2012 Ir: Neither Of The Tailings Areas Are Completely Covered. The Inner Portion Of The East Tailings Is Filled With Mature Trees That Likely Established Themselves Naturally. No Visible Standing Water, Sparse Vegetation Gorwing. A Pool O
17
596623
5330108
Tailings - Confined
Active
High Arsenic Tailings Area.
2012 Ir: Exploration Activities Have Taken Place Within The East Tailings. Progressive Rehabilitation Was Attempted Within The High Arsenic Tailing Area In An Attempt To Drain Surface Water And Repair Dam Breach. A Disturban
17
596616
5330133
Tailings - Unconfined
Active
West Tailings
2012 Ir: Disturbance Of Some Of The Natural Vegetation Which Established Itself Over The Wets Tailings Was Observed. A Diamond Drill Operating South Of Pancake Lake And On Top Of The Tailings Have Re-exposed The Tailings. Erosion Of The
17
595884
5329863
Tailings Dams
Active
2017 Dam Inspection: Dam Is Made Of Tailings And The Dam Is Eroding. Tailings Are Observed In A Nearby Low-lying Area. An Erosion Gully Has Formed Near The Southwest Corner. The Estimated Distance Of The Erosion Gully Is Approx. 30m Long By 3m Wide. Crest
17
596699
5329984
Tailings Dams
Active
2017 Dam Inspection: Dam 2 Is More Of An Internal Dyke, There Are Tailings On Both Sides. We Observed Erosion From Equipment Accessing The Tailings Which Left Ruts. There Was Also A Breach At The Southern End Of The Dam About 1m Deep And Was Vegetated No
17
596563
5330165
Tailings Dams
Active
2017 Dam Inspection: Dam 1 Is Breached And Is Partially Holding Back Water In Spring Water Will Discharge Into The Environment Through The Breach.
2003 Tailings Report; Located At The Northwest End Of The Tailings East Area. The Crest And Downstream S
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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