PROVEN AND PROBABLE MINERAL RESERVES WITH AN EFFECTIVE DATE OF DECEMBER 31, 2018
(update prepared under the supervision of Ramon Mendoza Reyes, PEng, QP Mining for First Majestic)
- Mineral Reserves have been classified in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum (“CIM”) Definition Standards on Mineral Resources and Mineral Reserves, whose definitions are incorporated by reference into National Instrument 43-101 (NI43-101).
- The Mineral Reserves statement provided in the table above is based on internal estimates prepared as of December 31, 2018. The information provided was reviewed and prepared under the supervision of Ramon Mendoza Reyes, PEng, and a Qualified Person ("QP") for the purposes of NI43-101.
- Silver-equivalent grade is estimated considering metal price assumptions, metallurgical recovery for the corresponding mineral type/mineral process and the metal payable of the corresponding contract of each mine. Estimation details are listed in each mine section of this AIF.
- Metal prices considered for Mineral Reserves estimates were $17.00/oz Ag and $1,250/oz Au, $1.00/lb Pb, and $1.20/lb Zn.
- A two-step constraining approach has been implemented to estimate reserves for each mining method in use: A General Cut-Off Grade (GC) was used to delimit new mining areas that will require development of access and infrastructure and all sustaining costs. A second Incremental Cut-Off Grade (IC) was considered to include adjacent mineralized material which recoverable value pays for all associated costs, including but not limited to the variable cost of mining and processing, indirect costs, treatment, administration costs and plant sustaining costs.
The cut-off grades, metallurgical recoveries, payable terms and modifying factors used to convert Mineral Reserves from Mineral Resources are different for all mines. These cut-off grades and economic parameters are listed in the applicable section describing each mine below in this AIF. - Dilution for underground mining includes consideration for planned dilution due to geometric aspects of the designed stopes and economic zones, and additional dilution consideration due to material handling and other operating aspects. Dilution and mining recovery factors are listed in the applicable section describing each mine below in this AIF.
- Tonnage is expressed in thousands of tonnes, metal content is expressed in thousands of ounces.
- Totals may not add up due to rounding.
- The technical reports from which the above-mentioned information is derived are cited under the heading "Current Technical Reports for Material Properties" of the AIF.
MEASURED AND INDICATED MINERAL RESOURCES WITH AN EFFECTIVE DATE OF DECEMBER 31, 2018
(update prepared under the supervision of Ramon Mendoza Reyes, PEng, QP for First Majestic)
- Mineral Resources have been classified in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum (“CIM”) Definition Standards on Mineral Resources and Mineral Reserves, whose definitions are incorporated by reference into NI 43-101.
- The Mineral Resources information provided above is based on internal estimates prepared as of December 31, 2018. The information provided was reviewed and compiled by Ramon Mendoza Reyes, PEng, QP for First Majestic, and is based on internal work prepared under the supervision of First Majestic internal QPs, who have the appropriate relevant qualifications, and experience in geology and resource estimation
- Metal prices considered for Mineral Resources estimates were $17.50/oz Ag, $1,300/oz Au, $1.00/lb Pb, and $1.20/lb Zn.
- Silver-equivalent grade is estimated considering: metal price assumptions, metallurgical recovery for the corresponding mineral type/mineral process and the metal payable of the corresponding contract of each mine. Estimation details are listed in each mine section of the Annual Information Form (AIF).
- The cut-off grades used to estimate Mineral Resources are different for all mines. The cut-off grades and factors are listed in the applicable section describing each mine section of the AIF.
- Measured and Indicated Mineral Resources are reported inclusive of Mineral Reserves.
- La Guitarra was placed in care and maintenance on August 3, 2018 and is no longer a material property.
INFERRED MINERAL RESOURCES WITH AN EFFECTIVE DATE OF DECEMBER 31, 2018
(update prepared under the supervision of Ramon Mendoza Reyes, PEng, QP for First Majestic)
- Mineral Resources have been classified in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum (“CIM”) Definition Standards on Mineral Resources and Mineral Reserves, whose definitions are incorporated by reference into NI 43-101.
- The Mineral Resources information provided above is based on internal estimates prepared as of December 31, 2018. The information provided was reviewed and compiled by Ramon Mendoza Reyes, PEng, QP for First Majestic, and is based on internal work prepared under the supervision of First Majestic internal QPs, who have the appropriate relevant qualifications, and experience in geology and resource estimation.
- Metal prices considered for Mineral Resources estimates were $17.50/oz Ag, $1,300/oz Au, $1.00/lb Pb, and $1.20/lb Zn.
- Silver-equivalent grade is estimated considering: metal price assumptions, metallurgical recovery for the corresponding mineral type/mineral process and the metal payable of the corresponding contract of each mine. Estimation details are listed in each mine section of the Annual Information Form (AIF).
- The cut-off grades used to estimate Mineral Resources are different for all mines. The cut-off grades and factors are listed in the applicable section describing each mine section of the AIF.
- La Guitarra was placed in care and maintenance on August 3, 2018 and is no longer a material property.
Cautionary Notes to U.S. Investors Concerning Reserve and Resource Estimates
The definitions of Proven and Probable Reserves used in National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-101") differ from the definitions in the United States Securities and Exchange Commission ("SEC") Industry Guide 7. Under SEC Guide 7 standards, a "Final" or "Bankable" feasibility study is required to report reserves, the three year history average price is used in any reserve or cash flow analysis to designate reserves and the primary environmental analysis or report must be filed with the appropriate governmental authority.
In addition, the terms "Mineral Resource", "Measured Mineral Resource", "Indicated Mineral Resource" and "Inferred Mineral Resource" are defined in and required to be disclosed by NI 43-101; however, these terms are not defined terms under SEC Industry Guide 7 and normally are not permitted to be used in reports and registration statements filed with the SEC. Investors are cautioned not to assume that any part or all of mineral deposits in these categories will ever be converted into Reserves. "Inferred Mineral Resources" have a great amount of uncertainty as to their existence, and great uncertainty as to their economic and legal feasibility. It cannot be assumed that all or any part of an Inferred Mineral Resource will ever be upgraded to a higher category. Under Canadian rules, estimates of Inferred Mineral Resources may not form the basis of feasibility or pre-feasibility studies, except in rare cases.
Accordingly, information contained in this website containing descriptions of First Majestic's mineral deposits may not be comparable to similar information made public by U.S. companies subject to the reporting and disclosure requirements under the United States federal securities laws and the rules and regulations there under.