XML 35 R25.htm IDEA: XBRL DOCUMENT
v3.22.1

SIGNIFICANT ACCOUNTING POLICIES (Policies) | 3 Months Ended
--- | ---
Mar. 31, 2022
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |
Risks and Uncertainties | Risks and Uncertainties COVID-19 The Company continues to closely monitor and respond, as possible, to the ongoing COVID-19 pandemic. As the global situation continues to change rapidly, ensuring the health and safety of the Company’s employees and contractors is one of the Company’s top priorities. Many jurisdictions including the United States, Canada, Mexico, and Argentina have varied but continued restrictions to travel, public gatherings, and certain business operations. Unlike the year 2020, there were no mandated suspensions for the Company’s operations during 2021 or during the three months ended March 31, 2022 (although, as described in this report Covid-19 impacted the Company’s operations and results for the quarter). In addition, vaccination rates in countries where the Company operates continue to increase. The Company’s results of operations, financial position, and cash flows were adversely affected during the three months ended March 31, 2022 and 2021 due to COVID-19. The continuing impact of the COVID-19 pandemic on the Company’s results of operations, financial position and cash flows will depend on future developments, including the duration and spread of the outbreak, variants of the COVID-19 virus, the availability, ongoing effectiveness, development and distribution and effectiveness of vaccinations and treatments and on government advisories, restrictions, and financial assistance offered. To ensure a safe working environment for the Company’s employees and contractors and to prevent the spread of COVID-19, the Company continues to reinforce safety measures at all sites and offices including contact tracing, restricting non-essential travel, and complying with public health orders. The impact of COVID-19 on the global financial markets, the greater labor market, supply chains, and the overall economy and the Company is highly uncertain and cannot be predicted. Maintaining normal operating capacity is also dependent on the continued availability of supplies and contractors, which are out of the Company’s control. If the financial markets and/or the overall economy continue to be impacted, the Company’s results of operations, financial position and cash flows may be further affected. As the situation continues to evolve, the Company will continue to monitor market conditions closely and respond accordingly. Continuation of COVID-19 through 2022 and beyond could impact employee health, workforce availability and productivity, insurance premiums, ability to travel, our suppliers, labor costs, the availability of industry experts, personnel and equipment, restrictions or delays to field work, studies, and assay results, impeding access to capital markets when needed on acceptable terms and other factors that will depend on future developments that may be beyond the Company’s control. The Company has completed various scenario planning analyses to consider the potential impacts of COVID-19 on its business, including volatility in commodity prices, temporary disruptions and/or curtailments of operating activities (voluntary or involuntary). However, there is no assurance that these measures will prevent adverse effects from COVID-19 in the future.
Flow-through Issuance | Flow-through Issuance During the three months ended March 31, 2022, the Company completed a Canadian Exploration Expenditures (“CEE”) flow-through common share financing for gross proceeds of $15.1 million. During 2021, the Company raised gross proceeds of $12.7 million through a Canadian Development Expenses (“CDE”) flow-through common share issuance and raised gross proceeds of $31.5 million through an equity financing (Note 12). In 2021a subsidiary of the Company secured an additional $40.0 million for its Los Azules project in Argentina (Note 18) and in March 2022, the Company entered into a $15.0 million unsecured subordinated promissory note and amended the terms of its $50.0 million senior secured term loan facility (Note 10).

X
- Definition Disclosure of accounting policy for issuance of flow-through shares to investors whereby the deductions for tax purposes related to resource exploration and evaluation expenditures may be claimed by investors instead of the entity, subject to a renouncement process. + References No definition available. + Details
Name: | mux_FlowThroughSharesPolicyTextBlock
Namespace Prefix: | mux_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Accounting policy for risk and uncertainties relating to the business organization that affect the going concern of the business. + References No definition available. + Details
Name: | mux_RiskAndUncertaintiesAffectingGoingConcernPolicyPolicyTextBlock
Namespace Prefix: | mux_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration