Ministry of Energy and Mines
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The purpose of this policy is to provide direction to claim holders and decision makers with respect to their options for meeting their assessment work requirements pursuant to the Mining Act, R.S.O. 1990 M.14 (the Act) and Ontario Regulation 65/18 (the Regulation). Claim holders may allocate credits, apply credits, or make payment in place.
Claim holders must satisfy their required annual units of assessment work to keep their claims in good standing. They must perform assessment work and submit an assessment work report that complies with the Technical Standards for Reporting Assessment Work through the Mining Lands Administration System (MLAS). The minister reviews the report and assigns assessment work credits as set out in the Regulation. The assessment work credits are then placed in the reserve of the mining lands on which the work was performed.
Assessment work credits in the reserve for mining lands can then be distributed to a mining claim to satisfy the claim’s annual assessment work requirements. There are two types of distribution of assessment work credits:
The MLAS application shall be used to distribute and apply assessment work credits. The ministry has prepared directives pertaining to distributing and applying assessment work credits. The documents are available through the ministry’s website: Distribute Approved Credit, Submit a Pending Distribution and Revise Pending Distribution.
In certain circumstances, a claim holder may make a payment in place of performing assessment work required for a mining claim. A payment in place shall be made to the minister on or before the due date of the mining claim. Payments must be submitted via MLAS; claim holders can reference the Payment in Place directive available on our website.
The amount of assessment work credits that a mining claim can receive is the amount required to satisfy the current annual unit of assessment work and the five subsequent annual units.
The maximum amount of assessment work credits that may be allocated from the reserve of any mining lands are set based on the type of tenure involved, and the size of the mining lands.
For mining claims, the maximum amount of assessment work credits that can be allocated from a reserve are as follows:
|
Claim Size |
Maximum Allocation per assessment year |
Boundary claim |
$50,000 |
1 to 2 cells |
$50,000 |
3 to 5 cells |
$100,000 |
6 to 25 cells |
$150,000 |
For mining lands other than mining claims, such as leases, patents or licences of occupation (whether exploratory or mining) the maximum amount of assessment work credits that can be distributed from a reserve are as follows:
Area (ha) |
Maximum Allocated per calendar year |
≤25 |
$50,000 |
>25 to ≤100 |
$100,000 |
>100 |
$150,000 |
Assessment work credits from the reserve of the mining lands can not be distributed to a contiguous mining claim unless the lands are:
Mining claims are contiguous to one another if the cells on the provincial grid in which the mining claims are located are contiguous to one another as defined in section 17 (4) of the Regulation.
For the purposes of allocating assessment work credits from a reserve of a mining claim (provider) to another contiguous mining claim (receiver), contiguity is considered established when the cells on the provincial grid in which the mining claims (including boundary claims) are located are contiguous to one another in any of the following ways:


Mining lands (including mining claims and mining lands other than mining claims) are contiguous if they meet the rules for contiguity set out in subsections 17 (4), (5) and (6) of the Regulation. For the purposes of allocating assessment work credits from a reserve of mining lands other than a mining claim to a contiguous mining claim, contiguity is considered established when:



Figure 5: Mining Lands 4 (ML 4 (provider)) is contiguous with Claim 66 (receiver). The boundary of ML 4 touches the boundary of ML 3 and part of ML 3 is in the same cell as Claim 66.


Note: The bottom of the pushpin identifies the location of the mining lands.
Note: Patented mining lands owned in fee simple must be entered on the mining land tax record before they may be used to establish contiguity. If a property is not entered on the mining land tax record, the owner must provide written notice to the ministry at least 30 days prior to allocating assessment work credits in MLAS. Please refer to the Mining Land Tax policy for more information.
A claim holder may make a payment in place of assessment work required for a mining claim. The following are the prescribed limitations:
For all inquiries about assessment costs please contact:
Ministry of Energy and Mines
Mining Lands Section
Land Tenure and Assessment Unit
B-3, 933 Ramsey Lake Road
Willet Green Miller Centre
Sudbury, ON P3E 6B5
Toll Free Telephone: 1-888-415-9845
Email: mlas.ltau@ontario.ca
66 (3) Assessment work performed on mining lands or payment made in place of assessment work may be allocated to contiguous unpatented mining claims in the prescribed manner. 2009, c. 21, s. 34 (3).
8. (2) The purpose of assessment work credits is to allow a claim holder to use the credits in accordance with this Part to satisfy annual units of assessment work that are required to be performed on the claim under section 65 of the Act.
(4) Under the system of assessment work credits, a claim holder shall be permitted to,
9. (1) The minister shall review all assessment work reports submitted under section 6 and evaluate the assessment work described in the report in order to,
(2) The minister shall transfer the amount of assessment work credits into a reserve for the mining claim established under section 16.
(3) The claim holder may distribute assessment work credit from a reserve to the mining claim in accordance with sections 17 and 19 in an amount that is sufficient to satisfy the annual units of assessment work that the claim holder is required to perform on the claim under section 65 of the Act,
17 (4) For the purposes of allocating assessment work credits from a reserve for a mining claim to another contiguous mining claim under clause (3) (b), mining claims are considered to be contiguous to one another if the cells on the provincial grid in which the mining claims are located are contiguous to one another in any of the following ways:
17 (5) For the purposes of allocating assessment work credits from a reserve of mining lands other than a mining claim to a contiguous mining claim under clause (3) (b), the mining lands are considered to be contiguous to a mining claim if,
17 (6) The holder or owner of mining lands shall not allocate assessment work credits from the reserve of the mining lands to a contiguous mining claim unless the mining lands and the mining claim, and any mining claims or mining lands that connect them in accordance with the rules on contiguity described in subsections (4) and (5),
18. (1) The holder or owner of mining lands may appoint an assessment work manager to distribute assessment work credits in the reserves for the mining lands in the place of the holder or owner in accordance with this Regulation.
19. The amount of assessment work credits that may be distributed from a reserve for a mining claim or for other mining lands to a mining claim at any given time is subject to the following limitations: