MLAS: Mining Lands Administration System

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If you have **not** yet received an email with migration instructions to Ontario.ca Login (also known as Public Secure) account, **please contact** the Provincial Mining Recording office at <pro.ndm@ontario.ca> or call us at <span>[1-888-415-9845](tel:+18884159845)</span>. Voicemail messages left after hours will be returned the next business day. ## How to register for MLAS There are 4 steps to register in MLAS. **Step 1:** Create a [Public Secure / Ontario.ca Login](https://www.mlas.mndm.gov.on.ca/). Follow the direction to ‘create a new account’. Use your email address as your ‘username’ and create a password. **Step 2:** A verification email will be sent to the address you provided. Click on the ‘Start Activation’ button. **Step 3:** You will be redirected to default internet browser. Click on the ‘Complete Activation’ button. **Step 4:** Input details to create your MLAS client profile. Once confirmed, you will be issued an MLAS client ID and sent a confirmation email with your client details. You will then be able to use MLAS. If you do not already have a [prospector’s licence](/page/directives-getting-started-mining-lands-administration-system#section-1) (PDF) you can apply for one in MLAS once you have your MLAS user account. ## How to use MLAS ### Mining Act directives Read the [Mining Act directives](/page/mining-act-resources#section-5) for a step-by step guide on how to use MLAS. ## Land notices, withdrawals and reopenings The Minister may, by order: - withdraw an area from prospecting, staking (mining claim registration as of April 10 annually), sale and lease, known as a withdrawal order - lift an existing withdrawal to reopen the area for prospecting, staking, sale and lease, known as a reopening order For a list of withdrawals and reopenings, visit [Land notices, withdrawal and reopenings](http://www.geologyontario.mndm.gov.on.ca/mines/lands/withreop/default_e.html). ## June 1 open list Each year we publish a [list of lands or mining rights open for registration as of June 1](https://www.ontario.ca/document/ontario-gazette-volume-159-issue-20-may-16-2026). This list is published in one issue of the Ontario Gazette. We also publish a second [list of lands that are in arrears of mining land taxes](https://www.ontario.ca/document/ontario-gazette-volume-159-issue-27-july-4-2026/government-notices-other). If the total amount of taxes, penalties and costs are not paid by December 31 of the current year, the lands may be forfeited to the Crown. Some of the lands on the June 1 open list may have mine hazards within their boundaries. You should conduct your mineral exploration activities as per the Mining Act and other health and safety regulations. Some of the June 1 open list lands may be subject to withdrawal under the Mining Act. We encouraged you to reference the MLAS map viewer or contact the [Provincial Recording Office](https://www.infogo.gov.on.ca/infogo/home.html#orgProfile/176142/en) if you have any questions. ## Mining lands data You can analyze and combine mining lands data with other data by using geographic information system (GIS) software. Data is available in ESRI^® ArcView^® shape file format. The data is split into two files: - operational data for claims and alienations, mining land tenures and non-mining land tenures - administrative data for cell grid, lots and concessions, administrative boundaries, mining divisions, exploration regions, legacy claims and the provincial boundary You can download the data from [OGSEarth mining claims](https://www.geologyontario.mndm.gov.on.ca/ogsearth.html#mining-claims). ## Mining claim maps ### Paper maps You can buy mining claim maps in paper format. Maps are available at two standard scales: 1:20000 and 1:40000. The cost varies depending on the size and colour quality you would like. To order paper maps, contact the Publication Services Sales Coordinator: <span>[Tel: 705-670-5691](tel:+17056705691)</span>

Email: <pubsales.ndm@ontario.ca> ### Historical maps Before claim maps were available online, mining claims had to be drawn by hand on a map made of paper, linen or Mylar. These mining claim maps are now known as historical mining claim maps. We have digitized all historical mining claim maps. They are available as PDFs from the [Historical mining claim map website](http://www.geologyontario.mndm.gov.on.ca/mines/lands/historic_claims/historical_mining_claim_maps_e.html). ## News and updates Check this page for updates on mining lands and MLAS.                                      MLAS Fact Sheets and Update Bulletins [archive](https://www.geologyontario.mndm.gov.on.ca/mines/lands/mlas/default_e.html). ### Fact sheets - [September 2026 — MLAS Release 2.5.29.2 (PDF)](https://www.geologyontario.mines.gov.on.ca/mmd/mines/lands/mlas/mem_mlas_factsheet_release_29_2_en_2026_09.pdf) - [June 2026 — MLAS Release 2.5.29.1 (PDF)](https://www.geologyontario.mines.gov.on.ca/mmd/mines/lands/mlas/mem_mlas_factsheet_release_29_1_en_2026_06.pdf) - [March 2026 — Adjustments to the mining lands administrative fees (PDF)](https://www.geologyontario.mines.gov.on.ca/mmd/mines/lands/mlas/mem_adjustments_to_the_mining_lands_administrative_fees_mar2026.pdf) - [January 2026 — MLAS Release 2.5.28.2 (PDF)](https://www.geologyontario.mines.gov.on.ca/mmd/mines/lands/mlas/mines_mlas_client_factsheet_r_28_2_2026-01.pdf) - [September 2025 — MLAS Release 2.5.28.1 (PDF)](https://www.geologyontario.mines.gov.on.ca/mmd/mines/lands/mlas/mines_mlas_client_factsheet_r_28_1_2025-09.pdf) ### MLAS bulletins There are no updates at this time. ### Get email updates Get email updates about mining lands and MLAS. Email [miningact@ontario.ca](mailto:miningact@ontario.ca?subject=MLAS%20update%20bulletin), with the subject line “MLAS update bulletin,” to be added to our email distribution list. ## Related <span class="show-for-sr">information</span> - [Mining and minerals](/page/mining-and-minerals) - [Mining Act resources](/page/mining-act-resources/) - [Mining Act policies](/page/mining-act/#section-2) - [Mining Act standards](/page/mining-act/#section-3) - [Mining Act directives](/page/mining-act/#section-4) - [Fees for mining lands (PDF)](https://www.geologyontario.mndm.gov.on.ca/mines/lands/mining-sequence/fee_schedule_en.pdf) - [Claimholder’s Guide to Conversion (PDF)](https://www.geologyontario.mndm.gov.on.ca/mines/lands/mining-sequence/claim_holders_guide_to_conversion_en.pdf) - [Glossary of terms (PDF)](https://www.geologyontario.mndm.gov.on.ca/mines/lands/mining-sequence/glossary_glossaire.pdf) <span class="small">Updated: September 25, 2026</span> <span class="small">Published: April 01, 2022</span> [](/page/ministry-energy-and-mines) ## Ministry of Energy and Mines Working to develop a safe, reliable and affordable energy supply across Ontario, and overseeing our mineral sector, providing geoscience information and supporting sustainable development. ## Questions or comments There are many ways to contact the Government of Ontario. [Contact us](/feedback/contact-us?id=553520&nid=533841) - [About Ontario](https://www.ontario.ca/page/about-ontario) - [Accessibility](https://www.ontario.ca/page/accessibility) - [Archives](https://www.archives.gov.on.ca/topic/archived-websites/#Archived-ontario.ca-pages) - [News](http://news.ontario.ca/newsroom/en) - [Privacy](https://www.ontario.ca/page/privacy-statement) - [Terms of use](https://www.ontario.ca/page/terms-use) [© King’s Printer for Ontario, 2012<span aria-hidden="true">–</span><span class="show-for-sr">to</span>26](https://www.ontario.ca/page/copyright-information) Top