Annual Mineral Production Survey - Preliminary Estimates

Detailed information for 2019





Record number:


The Annual Mineral Production Survey - Preliminary Estimates is a survey of the mining industry in Canada. It is intended to cover establishments primarily engaged in mining or quarrying activities as well as establishments engaged in secondary business activity explicitly linked to the mining sector. Data collected from businesses are aggregated with information from other sources to produce official estimates of national and provincial production for these activities.

Data release - February 25, 2020


The purpose of this survey is to obtain preliminary estimates on non-fuel mineral production. Data are collected using many questionnaires to cover several products.

Statistics on non-fuel mineral production are essential to support informed decision-making by federal, provincial and territorial governments and the mining industry. The statistics are required by a variety of data users, including individual business firms and trade associations; municipal, provincial/territorial and federal governments; international organizations; and private citizens.

In addition, the results of this survey are used by Natural Resources Canada to conduct analysis, to provide informed policy advice on investment, industrial and regional development, trade and tariff policies, as well as the development and management of natural resources.

Reference period: The calendar year

Collection period: The collection period is from late September of the reference year to late January of the year after the reference year


  • Manufacturing
  • Non-metallic mineral and metal

Data sources and methodology

Target population

The target population of the Annual Mineral Production Survey - Preliminary Estimates comprises all establishments engaged in non-metallic and metallic mineral and ore mining. Some establishments engaged in sand & gravel and stone activities, as well as contract drilling (except oil and gas) are also surveyed.

Instrument design

The Annual Mineral Production Survey - Preliminary Estimates questionnaires collect information on Canadian mining companies' non-fuel mineral production.


This is a sample survey with a cross-sectional design.

All establishments within the scope of the metallic and non-metallic mineral mining and quarrying industry in Canada are surveyed, as well as any other establishment engaging in the activity of mining, or the extraction of sand, gravel, or stone.

Half of the universe of establishments that produce sand & gravel as secondary activity is sent a survey form during the preliminary survey. The second half is sent a survey during the annual survey. In addition, non-responding establishments at the preliminary survey are sent a survey form to complete during the annual survey data collection.

Data sources

Data collection for this reference period: 2019-09-30 to 2020-01-31

Responding to this survey is mandatory.

Data are collected directly from survey respondents.

Data are collected primarily through electronic files sent via a secure system, while providing respondents with the option of receiving a paper questionnaire, replying by telephone interview or using other electronic filing methods. Follow-up for non-response and for data validation may be conducted by telephone, mail and/or email.

View the Questionnaire(s) and reporting guide(s).

Error detection

Error detection is an integral part of both collection and data processing activities. Data received on survey questionnaires are subject to extensive edit processes, both by a survey officer and by automated edits within the production system. These edits identify potential errors based on year-over-year changes in key variables, totals, and ratios that exceed tolerance thresholds, as well as identify problems in the consistency of collected data (e.g. a total variable does not equal the sum of its parts).

When errors are found, they are corrected using the failed edit follow up process during collection. Extreme values are flagged as potential outliers. Following their detection, these values are reviewed in order to assess their reliability. When required, the respondent may be contacted to confirm the data. Manual review of other units may lead to additional potential outliers being identified.

In general, every effort is made to minimize duplication, misclassification, reporting and processing errors.


Data are imputed to take into account missing data and non-response.

When non-response occurs or when reported data are considered incorrect during the error detection process, imputation is used to fill in the missing information and modify the incorrect information. Data are imputed for respondents that fail to provide critical information such as the quantity and value of mineral production.

Different methods of imputation may be used to complete a questionnaire, including pro-rating relevant historical data.

Imputation generates a complete and coherent micro data file that covers all survey variables.


All units in the observed population are surveyed. Estimation of totals is done by simple aggregation of the values of all units that are found in the domain of estimation. Estimates are computed for several domains of interest such as mineral groups and provinces/territories.

Quality evaluation

Most reporting and data entry errors are corrected through manual editing, automated edit checks and complex data review procedures. Strict quality control procedures are applied to ensure that collection, coding and data processing are as accurate as possible.

Checks are performed on all computing files. The survey final data sets are subject to rigorous analysis to ensure comparability with patterns observed in the historical data series. In addition, mineral production statistics from various provincial and territorial departments as well as other statistical agencies are compared with mineral production aggregates from the Preliminary Estimates survey to assess and ensure the quality and consistency of the data series.

Disclosure control

Statistics Canada is prohibited by law from releasing any information it collects which could identify any person, business, or organization, unless consent has been given by the respondent or as permitted by the Statistics Act. Various confidentiality rules are applied to all data that are released or published to prevent the publication or disclosure of any information deemed confidential. When necessary, data are suppressed to prevent direct or residual disclosure of identifiable data.

Natural Resources Canada will continue to publish tabular results of this survey, excluding any information which could identify any person, business, or organization, unless consent has been given by the respondent.

Revisions and seasonal adjustment

The resulting estimates for this survey are not subject to revisions. However, while considerable efforts have been taken to ensure high standards throughout all stages of collection and processing, the estimates can be reviewed if errors in recording, coding and processing data are reported in the published estimates.

Data accuracy

The response rate for this survey was 87% in 2018.

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