constructed and put into operation and use at the same time
with the principal parts of the projects.
Article 8 The design papers for mine construction projects must comply
with the safety rules and technological standards for mining industry
and shall, according to regulations of the State, be subject to the
approval of the authorities in charge of mining enterprises; those
failing to comply with the safety rules and technological standards for
mining industry may not be approved.
The designs of safety facilities in mine construction projects must be
examined with the participation of the competent department of labour
administration.
The safety rules and technological standards for mining industry shall
be formulated by the authorities in charge of mining enterprises
under the State Council.
Article 9 The following items in mining designs must comply with the
safety rules and technological standards for mining industry:
(1) ventilation system of the shaft, and quantity, quality and speed of
underground air;
(2) slope angles of an opencast mine and the width and height of its
steps;
(3) electricity supply system;
(4) hoisting and transportation systems;
(5) water control and drainage systems and fire control and fire-
extinguishing systems;
(6) gas control system and dust control system;
(7) other items concerning safety in mines.
Article 10 Each underground mine must have at least two walkable safety
outlets and the direct horizontal distance between such outlets must
comply with the safety rules and technological standards for mining
industry.
Article 11 Mines must have transportation and communication facilities
that link the mines with the outside and meet safety requirements.
Article 12 Mine construction projects must be constructed in accordance
with the design papers approved by the authorities in charge of mining
enterprises.
Upon completion, the safety facilities in mine construction projects
shall be subject to inspection for acceptance by the authorities in
charge of mining enterprises, with participation of the competent
department of labour administration; those failing to comply with the
safety rules and technological standards for mining industry may not
pass inspection for acceptance, and may not be put into operation.
CHAPTER III GUARANTEES FOR SAFETY IN EXPLOITATION OF MINES
Article 13 For exploitation of mines, requirements that ensure safe
production must be met, and the safety rules and technological standards
for mining industry corresponding to the exploitation of different types
of minerals must be observed.
Article 14 Mine pillars and rock pillars to be preserved as specified in
the mining designs shall, within the prescribed period of time, be
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