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MT 289-1992The nature of the coal mine safety type common electric, automatic telephone. General technical conditions (English PDF)

煤矿本质安全型共电、自动电话机通用技术条件

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Issued by

National Mine Safety Administration

Level / Type

National · Mandatory

Issue date

March 31, 1992

Implementation date

August 1, 1992

Scope

MT 289-1992 is the English-translated version of 煤矿本质安全型共电、自动电话机通用技术条件.

MT 289-1992 is the Chinese industry standard "The nature of the coal mine safety type common electric, automatic telephone. General technical conditions". It was issued on March 31, 1992 by the National Mine Safety Administration, and took effect on August 1, 1992. It is in force.

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Document preview — MT 289-1992

National Standard of the People's Republic of China

Issued by: National Mine Safety Administration

Document data

1 Document data

Sector: Coal (industry standard).

Issuing body: National Mine Safety Administration.

Date of issue: 1992-03-31.

Date of implementation: 1992-08-01.

Status: valid.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

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