New User Registration
Password: Remember Me:

Ontario Abandoned Places

An online community for urban explorers
Location Database
Search Locations

User Search

Marmora Mine

Located in: Marmora and Lake
Location #1487

To request this location be removed, Click Here.

Location Owner:rcouper
Creation Date: 4/29/2010
Last Updated: 12/29/2014

Marmoratan Mine

The town of Marmora, originally named Marmora Iron Works, had seen mining activity as early as 1820.

In 1949 an aeromagnetic survey was conducted by the Ontario Dept. of Mines and the Canadian Geological Survey. The $40,000 survey revealed a magnetic anomaly that interested geologists at the Bethlehem Steel Corporation in New York.

In May, 1950 Bethlehem Steel purchased a 290 acre tract of property. The following year the company diamond drilled approximately 40 holes ranging from 460 to 1800 feet to further investigate the ore body.

In 1953 Bethlehem Steel began construction of the Marmoraton Mine. In order to gain access to the magnetite, the mine first had to blast away 120 feet of limestone. When initial blasting was complete, the open pit measured approximately 1700 feet by 1200 feet with a depth of 600 feet. In total over 73 million tonnes of rock has been removed from the open pit mine.

The Marmoraton Mine officially opened on May 11, 1955 with a ribbon cutting ceremony. The president of Bethlehem Steel, A.B. Homer cut a ribbon connecting the Powell Stackhouse ship to the ore dock in Picton. The ceremony was attended by federal, provincial and civic employees.

Marmoratan Mine was quite efficient. Once the crude ore was extracted, magnetic separators sorted the different minerals. The iron was concentrated into high density pellets that were easier to ship and more economical in making steel.

Each day 30 to 35 railway cars delivered iron ore pellets to Picton where they would be loaded onto boats and shipped to the company's blast furnaces in Lackawanna, New York. Annual product was in the range of over 520,000 tons of low-grade ore.

Two 250 horsepower water pumps removed over 20,000,000 gallons of water from the pit monthly.

The operation initially employed 270 local workers, a number that grew to approximately 300.

On January 3, 1978 Bethlehem Steel announced that due to poor business conditions the mine would close on March 31, 1978. The final shipment consisting of 23,833 tons of ore pellets was shipped on April 30th. Marmoratane Mine was then purchased by Armbro Holdings for potential use as a rock quarry.

Today the water pumps have fallen silent and the pit is estimated to be filled with 656 feet of water and officially classified as a lake.

Canada Talc Limited purchased the mill to process ore from the Madoc talc mine.

There is currently a proposal to build a unique hydro electric generating station on the abandoned site which would provide a source of stored electricity.

Abandoned houses may be dangerous! Read the LEGAL DISCLAIMER.
Always obtain permission before entering someone else's property.


Status: Closed
Category: Mine



View map
Who Viewed
Create Photo Gallery
Edit Location

None listed
We do not assume any responsibility for the accuracy of this information or for liability should you injure yourself.
Maps are only shown to logged in members. Google Maps is no longer free.

2015 mine visit
Marmora Mine
Created on:3/27/2016
Created by: thebroy123
16 photos
Marmora Mine
Created on:9/22/2015
Created by: AlexS
12 photos
Marmora Mine
Created on:12/29/2014
Created by: Filthy_Feed
4 photos
Marmora Mine
Created on:8/30/2014
Created by: Fades_em
11 photos
Marmora Mine
Marmora Mine
Created on:4/23/2013
Created by: UnLeashed_Photography
15 photos
August 2012
Marmora Mine
Created on:9/14/2012
Created by: scarlett-letter
14 photos
Beautiful Day - April 2012
Marmora Mine
Created on:5/30/2012
Created by: OAP
17 photos
Fall 2009
Marmora Mine
Created on:2/8/2012
Created by: sleep_is_awesome
13 photos
October 19, 2011
Marmora Mine
Created on:10/22/2011
Created by: seebest
6 photos
March 31, 2011
Marmora Mine
Created on:5/21/2011
Created by: seebest
2 photos
Marmora Mine in the Spring
Marmora Mine
Created on:4/15/2011
Created by: tj.champagne
2 photos
Marmora Mine
Created on:6/30/2010
Created by: rcouper
17 photos

superss says:
5/14/2013 4:33:57 PM

Well that sounds pretty smart & neat, but I'm not sure if it outweighs my desire to go cliff diving.

doom vs says:
5/14/2013 7:43:12 AM

See link added for updates on the plans.

doom vs says:
5/14/2013 7:40:24 AM

The fine folks at Aenco keep a very watchful eye on this place now that there is a probable future pumped hydro storage facility being built here. The new-ish fence cost 600K. Alleged zero tolerance for trespassing now. Cameras and busybody security at the nearby plant.

superss says:
5/13/2013 11:48:02 PM

I think this might have to be a cliff diving expedition.

Show All comments

On 8/31/2017 6:44:36 AM user OAP changed the following: security settings,
On 12/1/2016 12:54:22 AM user Digitisation deleted gallery with SID : 11302016215256
On 12/1/2016 12:53:13 AM user Digitisation created gallery : Higher than expected
On 3/27/2016 7:36:24 PM user clay70 moved gallery titled "marmora mine" from location #13305
On 9/22/2015 5:02:35 PM user OAP moved gallery titled "Marmora Mine" from location #12723
On 7/13/2015 10:26:43 PM user OAP deleted gallery with SID : 513201319414
On 12/29/2014 10:36:23 AM user Filthy_Feed rotated photos : ctimage.jpg /
On 12/29/2014 10:29:49 AM user Filthy_Feed uploaded photos : image.jpg / image.jpg / image.jpg / image.jpg / to SID: 1229201472643
On 12/29/2014 10:26:47 AM user Filthy_Feed created gallery : Gone
On 8/30/2014 2:24:35 PM user OAP moved gallery titled "Marmoraton" from location #11002
On 5/14/2013 5:42:53 AM user doom vs changed the following: links,
On 5/14/2013 5:40:37 AM user doom vs changed the following: security settings,
On 5/13/2013 10:07:38 PM user doom vs uploaded photos : MM 1.jpg / MM 2.jpg / MM 3.jpg / MM 4.jpg / MM 5.jpg / MM 6.jpg / MM 7.jpg / MM 8.jpg / MM 9.jpg / MM 10.jpg / MM 11.jpg / MM 12.jpg / MM 13.jpg / MM 14.jpg / MM 15.jpg / MM 16.jpg / MM 17.jpg / MM 18.jpg / MM 19.jpg / MM 20.jpg / MM 21.jpg / MM 22.jpg / to SID: 513201319414
On 5/13/2013 8:04:25 PM user doom vs created gallery : MAY '13 visit
On 4/23/2013 11:55:28 PM user UnLeashed_Photography uploaded photos : IMG_6358.JPG / IMG_6362.JPG / IMG_6364.JPG / IMG_6365.JPG / IMG_6367.JPG / IMG_6368.JPG / IMG_6370.JPG / IMG_6371.JPG / IMG_6375.JPG / IMG_6376.JPG / IMG_6377.JPG / IMG_6378.JPG / IMG_6380.JPG / IMG_6384.JPG / IMG_6385.JPG / to SID: 4232013225333