Mining Lands Administration in Ontario


Ontario has fully implemented the third phase of the Ontario government’s Modernizing the Mining Act (MAM) process. This phase:

  1. Moves Ontario’s mining lands administration systems from ground staking and paper map staking to online registration of mining claims; and
  2. Creates an online Mining Land Administration System (MLAS) that enhances client access to Ontario’s mining lands data and improves their ability to manage their files online.

On April 10, 2018, Ontario converted Ontario’s manual system of ground and paper staking, and maintaining unpatented mining claims to an online system. All active, unpatented claims were converted from their legally defined location by claim posts on the ground or by township survey to a cell-based provincial grid. Mining claims are now legally defined by their cell position on the grid and coordinate location in the MLAS Map Viewer. These changes are bringing greater accuracy and certainty to the location of mining claims, greater certainty of rights and interests, as well as flexible management of land assets.

The new MLAS Map Viewer is available here.  Only persons who have created their MLAS account by first registering via Ontario’s ONe-key portal can fully access the new system. Previous clients may also download our MLAS user guide.

Assistance for all matters related to the Mining Lands Administration System (MLAS) is available by calling us toll-free at 1-888-415-9845 (choose the Provincial Recording Office – Option 1). This toll-free line is staffed Monday to Friday from 8:30 a.m. to 5:00 p.m. At any time, clients may leave a voice message and we will return the call in accordance with Ontario’s Quality Service Standards.

MLAS Video Tutorials

A series of 11 video tutorials has been developed to help our mining lands clients navigate MLAS more effectively. These videos are posted on YouTube. You can find the complete listing on the Mining Act Policies, Standards and Directives page in the Resources section under Video Tutorials.

Minister’s Directives

Six of seven Minister’s Directives that also provide instruction on working in MLAS have also been posted to the website. For registered users of MLAS, the directives are also accessible from the “Reference Documents” link at the upper right corner of the MLAS home page.

Ontario Adjusts Administration Fees for Acquisition of Mining Lands – New and Adjusted Fees In Effect (updated April 10, 2018)

As part of Ontario’s work to modernize the Mining Act, our transition to a 24/7 Mining Lands Administration System (MLAS) and online mining claim registration requires us to adjust administrative fees related to registering new cell claims as well as other associated mining lands transactions.  New and adjusted fees were introduced on April 10th, 2018 concurrent with the launch of Stage 2 of MLAS. Key among these is the establishment of a new fee required to register cell claims in MLAS. In establishing this new registration fee, and adjusting other existing fees, the Ministry endeavoured to ensure that these are balanced and fair for all stakeholders.  ENDM is committed to ensuring mining administrative fees in Ontario are competitive with other provinces across Canada.

New fee structure.

Mining Act Modernization Regulations Available Online

All regulations that underpin legislation enabling the final phase of modernizing Ontario’s Mining Act are available on the government’s e-Laws website. They provided for the conversion of legacy mining claims, and form part of the regulatory framework for our 24/7 Mining Lands Administration System (MLAS) as well as for online mining claim registration. The regulations were finalized after engagement with industry representatives and other stakeholders including postings for public comment on the province’s regulatory and environmental registries. They include:

  1. O. Reg. 455/17 – Transition – Electronic Registration of Mining Claims
  2. O. Reg. 456/17 – General Reg. amendments
  3. O. Reg. 454/17 – Conversion of Legacy Claims Regulation
  4. O. Reg. 458/17 – Revoking Survey Reg. (Reg. 768, R.R.O. 1990)
  5. O. Reg. 457/17 – Revoking Forms Reg. (O. Reg. 44/11)
  6. O. Reg. 65/18 – New Assessment Work Regulation/Revocation of Assessment Work Regulation O. Reg. 6/96
  7. O. Reg. 66/18 - New Mining Claims Regulation / Revocation of Claim Staking and Recording Regulation O. Reg. 43/11

MLAS Update Bulletins

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  • April 3, 2019 - Updated Claim Management Policies Introduced
  • October 5, 2018 - New Instructional Resources to Help You Navigate MLAS
  • October 4, 2018 - Making the Most of Ontario’s New Mining Lands Administration System (MLAS)
  • April 10, 2018 - Ontario Launches Online Mining Claims
  • April 4, 2018 - Information Webinar - An Opportunity to Learn About Ontario’s New Mining Lands Administration System
  • March 28, 2018 - New Technical Standards for Reporting Assessment Work Now Available Online
  • March 20, 2018 - MLAS Information Sessions Coming to Dryden and Thunder Bay
  • March 9, 2018 - IMPORTANT REMINDER MLAS Service Interruption March 15-April 9, 2018
  • March 8, 2018 - Assessment Work and Mining Claims Regulations Now Available Online
  • March 2, 2018 - Ontario to Adjust Administration Fees for Acquisition of Mining Lands
  • March 2, 2018 - Preparing to Launch Stage 2 of MLAS. Ontario Moves Closer to Online Mining Claim Registration
  • February 27, 2018 - MLAS Information Workshops Scheduled
  • February 9, 2018 - Claim Holder’s Guide to Conversion an Important New Tool for MLAS Users
  • February 7, 2018 - Stage 1 of Ontario’s Mining Lands Administration System Launches Today at 10:00 a.m.
  • January 31, 2018 - How Mining Claim Due Dates Will Be Impacted by Transition and Conversion
  • January 26, 2018 - MLAS Enrolment Packages Are On the Way to Clients
  • January 17, 2018 - Sites of Aboriginal Cultural Significance May Continue to be Withdrawn During the Pre-Conversion Period
  • December 20, 2017 - A Claim Boundary Report Will Allow You to Tailor Conversion of Legacy Claims
  • December 19, 2017 - Be Prepared to Manage Your Mining Lands Online When MLAS Launches
  • December 18, 2017 - New Mining Act Modernization Regulations Available Online
  • October 2017 - Final Phase of Modernizing Ontario’s Mining Act to Launch in January 2018
  • September 2017 - New Proposed Regulations Posted to Ontario Environmental and Regulatory Registries
  • Special Edition - Ontario’s Spatial Data Update Completed in CLAIMaps
  • August 2017 - New Conversion Demonstration Tool Available in CLAIMaps
  • Special Edition - Are You Ready?
  • Special Edition - Porcupine Mining Division Spatial Data Now Available
  • July 6, 2017 - New Proposed Regulatory Changes Posted on Provincial Registries
  • Special Edition - Larder Lake Mining Division Spatial Data Now Available
  • May 2017 - Building A System On Highly Accurate Spatial Data
  • Special Edition - Ontario Legislature Passes Aggregate Resources and Mining Modernization Act, 2017
  • April 2017- First New Proposed Regulations Posted For Public Comment on Provincial Registries
  • Special Edition - 2017 Ontario Prospectors Exploration Showcase Edition
  • March 2017- Bill 39 Standing Committee Review Completed
  • Special PDAC Edition 2017 - See You at the 2017 PDAC Convention
  • February 2017 - We Will Need Your Up-to-Date Mailing Address
  • Special Edition - Sault Ste. Marie Mining Division Spatial Data Now Available
  • January 2017 - Bill 39 Committee Hearings Scheduled
  • December 2016 - Bill 39 Sent to Committee
  • November 2016 - Queen’s Park Debates Bill 39
  • Special Edition - Aggregate Resources and Mining Modernization Act Called for Second Reading
  • October 2016 - September 1, 2017 Target Deadline for Georeferencing Mining Claims
  • Special Edition - Ontario Legislature Moving Forward With Mining Act Modernization Bill
  • September 2016 - Have You Georeferenced Your Mining Claims?
  • August 2016 - Proposed Changes to the Assessment Work Reg.
  • May 2016 - Conversion is Coming
  • February 2016 – Proposed Legislation Introduced
  • March 2015 - Preview Ontario’s Proposed Provincial Grid/Moving from Ground-based to Cell-based Mining Claims
  • August 2014 – How to Keep Your Prospector’s Licence Valid
  • July 2014 – Georeference Your Claims Now
  • March 2014 - Mining Lands Administration going Digital/Engaging Industry and Aboriginal Communities

MLAS Fact Sheets

Aggregate Resources and Mining Modernization Act, 2017

The Aggregate Resources and Mining Modernization Act, 2017 (Bill 39) amends and modernizes both the Mining Act under the auspices of the Ministry of Energy, Northern Development and Mines, and the Ministry of Natural Resources and Forestry’s Aggregate Resources Act.

You may view the current version of the Mining Act.

For Further Information

To contact us please email, or telephone 1 888-415-9845.