Underground reserves

National Statistical Institute

‘Environmental and Energy Accounts’ Department

Petar Petrov

State expert

2 P. Volov street, 1038 Sofia

[email protected]

+359 2 9857 499

Not available

Statistical information on depletion of the ores, minerals and fossil fuels which represent a limited, non-renewable resource.

In the context of the European economic environmental accounts it aims to collect primary data necessary to compile accounts on non-refundable underground assets of minerals and ores in natural and value terms.

Reserves of natural resources are calculated and evaluated as the bowels, without taking into account losses during extraction and processing (enrichment).

- ‘Classification of reserves and resources of solid underground resources’ drawn up in accordance with the Act on the Underground Resources.

- NACE.BG 2008 /2 digits/.

Exhaustive survey covering all economic entities - holders of concessions for extraction, and companies that have reported receipts from extraction activity for the previous reference year.

Reserves and resources of underground natural resources - are minerals and ores deposits in the ground or on the ground with a specific geological knowledge about them and economic interest. The following classifying categories exist:

Reserves – That part of the underground resources, which are expected to be extracted commercially with some degree of certainty.

Proven reserves - Such reserves about which is found they can be technically and economically producible with a high level of certainty (90% or more) given the current technology and relative prices.

Probable reserves - reserves are not proven yet, but regarding which is estimated to have more than 50 % chance of being technically and economically producible. 

Resources - possible reserves, which are at present not regarded as probable but are estimated to have a significant, but less than 50 % chance of being exploitable.

Economic entity

Еconomic entities - holders of concessions for extraction, and companies that have reported receipts from extraction activity for the previous reference year.

Total for the country

2018-2021

Not applicable.

Thousand tons; thousand m³; number; thousand decares; year.

Year

- Law on Statistics;

- Regulation (EU) No.691/2011 of EP and the Council of 6 July 2011 on European environmental economic accounts

Not applicable.

Law on Statistics in force.

According Art. 25 of the Law on Statistics individual data are not published. Dissemination of individual data is possible only in compliance with Art. 26 of the Law on Statistics.

According Art. 25 of the Law on Statistics individual data are not published. Dissemination of individual data is possible only in compliance with Art. 26 of the Law on Statistics.

The date of release of statistical information is indicated in the Release Calendar presenting the results of the statistical surveys carried out by the National Statistical Institute.

The calendar is available on the NSI website: https://www.nsi.bg/en/node/480

Data on underground reserves is published on the NSI website, item ‘Environment, dub-item 'Underground reserves' in accordance with the Law on Statistics and the European Statistics Code of Practice respecting the professional independence and aimed at objectivity, transparency and equal treatment of all consumers.

Annual

Not applicable.

Electronic publication ‘Environment’

Detailed data on underground reserves are available to all users of the NSI website under the heading Environment: https://www.nsi.bg/en/node/14683/

Microdata is not available.

Information service upon request, according to the Rules for the dissemination of statistical products and services in NSI.

Electronic statistical questionnaire

- European Statistics Code of Practice;

- A common framework for quality management in the National Statistical System.

- European Statistics Code of Practice;

- A common framework for quality management in the National Statistical System.

No information. Data quality report is not prepared.

No information. Survey about satisfaction of customers is not conducted.

Survey about satisfaction of customers is not conducted.

Exhaustive survey.

The survey is comprehensive and there are no sampling errors.

The survey is comprehensive and there are no sampling errors.

Not applicable.

Not applicable.

Not applicable.

Not applicable.

By years.

Cost related to the collection and production of statistics on Waste are announced annually in the National Statistical Programme

Revision of the data is applied if necessary.

Revision of the data is applied if necessary.

Environmental statistics information system filled-in by economic entities - holders of concessions for extraction, and companies that have reported receipts from extraction activity for the previous reference year.

Annually.

Exhaustive survey covering economic entities - holders of concessions for extraction, and companies that have reported receipts from extraction activity for the previous reference year.

Comparing the data with those reported in the previous year - regarding mistakenly reported data, measure units, number of digits and others.

The data validation goes through three stages:

•At the data entry from the respondents in Environmental statistics information system;

•At regional level by the NSI Regional Statistical Offices;

•At national level by the NSI Head Office. Comparing the data with those reported in the previous year - regarding mistakenly reported data, measure units, number of digits and others.

Dataset containing all the units on the territory of the country.

Not applicable.