# KRS § 352.030: 352.030 Number of persons permitted to work in same air current or split-ventilation -- Repair > Kentucky · Statutes · In force URL: https://www.frixlaw.com/law-library/statutes/STATE_KY_TXXVIII_C352_S352.030 ## Section - **Citation:** KRS § 352.030 - **Heading:** 352.030 Number of persons permitted to work in same air current or split-ventilation -- Repair - **Jurisdiction:** Kentucky - **Kind:** Statutes - **Status:** In force - **Text as of:** August 14, 2026 - **Source:** Compiled text - **Location:** KY Code / Title XXVIII / Chapter 352 / Section 352.030 ## Text 352.030 Number of persons permitted to work in same air current or split- ventilation -- Repair. (1) As many as sixty (60) persons may work in the same air current or split, and with the approval of the mine inspector and the commissioner, as many as eighty (80) persons may work in the same air current. Each active section in a mine shall be ventilated by a separate split of intake air. Every mine, and all portions thereof, shall be ventilated by one (1) or more currents of air, which shall contain not less than nineteen and one-half percent (19.5%) of oxygen, nor any dangerous quantities of flammable gas, nor any harmful amount of poisonous gases or dust, when the current of air enters into each split. The ventilation shall be sufficient to prevent methane accumulations, so far as practicable, and to keep the methane percentage in the return of any split to not more than two percent (2%). (2) The ventilating current shall be circulated through the haulageways, travelways, and airways to reach all portions of the mine, except sealed sections; and it shall be circulated through the entries and rooms around the ends of line brattice and along pillar lines. It shall be conducted to the last breakthrough, or to the working faces if required, by means of stoppings, check doors, curtains, and brattice that may be necessary or required, in order to dilute, render harmless, and carry away the noxious and dangerous gases, smoke, and dust liberated therein, and to supply a sufficient quantity of ventilation for all emergencies. The ventilating current in the area of a mine's belt entries shall be directed to an air return before the ventilating current reaches the face area, unless the department, under certain conditions issues a permit for belt air to be used at the coal face. The department shall render a final written decision within sixty (60) calendar days of receipt of the permit application. (3) When mine ventilation, formerly satisfactory and adequate, becomes deficient in quality or quantity, the department shall have authority to order improvement of the ventilation. (4) No licensee, superintendent, or mine foreman shall permit any person to work at a place where sufficient ventilation cannot be maintained, except persons employed to make the places of employment safe in compliance with the requirements of this chapter, and while repair work necessary to comply with the requirements is in progress no person shall be permitted to enter that part of the mine affected except those actually employed in doing the repair work. The repair work shall be done under the constant supervision of a certified official designated by the mine foreman. (5) Each licensee shall adopt a plan which shall provide that when any mine fan stops, immediate action shall be taken by the licensee or his agent: (a) To withdraw all persons from the working sections; (b) To cut off the power in the mine in a timely manner; (c) To provide for restoration of power and resumption of work if ventilation is restored within a reasonable period, of not more than fifteen (15) minutes, as set forth in the plan after the working places and other active workings where methane is likely to accumulate are reexamined by a certified person to determine if methane in amounts of one percent (1%) or more exists therein; and (d) To provide for withdrawal of all persons from the mine if ventilation cannot be restored within a reasonable time, of not more than fifteen (15) minutes. The plan and revisions thereof approved by the commissioner or his authorized representative shall be set out in printed form and a copy shall be furnished to the commissioner or his authorized representative. ## Nearby sections - [KRS § 352.010 352.010 Definitions for chapter](https://www.frixlaw.com/law-library/statutes/STATE_KY_TXXVIII_C352_S352.010.md) - [KRS § 352.018 352.018 Required maps and plans -- Format](https://www.frixlaw.com/law-library/statutes/STATE_KY_TXXVIII_C352_S352.018.md) - [KRS § 352.020 352.020 Mine ventilation plans -- Methods of ventilation -- Amount of air required -- Plan requirements](https://www.frixlaw.com/law-library/statutes/STATE_KY_TXXVIII_C352_S352.020.md) - [KRS § 352.030 352.030 Number of persons permitted to work in same air current or split-ventilation -- Repair](https://www.frixlaw.com/law-library/statutes/STATE_KY_TXXVIII_C352_S352.030.md) - [KRS § 352.040 352.040 Working places not to be driven in advance of air current](https://www.frixlaw.com/law-library/statutes/STATE_KY_TXXVIII_C352_S352.040.md) - [KRS § 352.045 352.045 Cutting or welding inby last open break prohibited](https://www.frixlaw.com/law-library/statutes/STATE_KY_TXXVIII_C352_S352.045.md) - [KRS § 352.050 352.050 Permissible rating for underground machinery -- Transportation of underground mining equipment](https://www.frixlaw.com/law-library/statutes/STATE_KY_TXXVIII_C352_S352.050.md) - [KRS § 352.060 352.060 Rock-dusting](https://www.frixlaw.com/law-library/statutes/STATE_KY_TXXVIII_C352_S352.060.md) - [KRS § 352.070 352.070 Checking employees in and out](https://www.frixlaw.com/law-library/statutes/STATE_KY_TXXVIII_C352_S352.070.md) - [KRS § 352.080 352.080 New or additional openings -- Map to be filed](https://www.frixlaw.com/law-library/statutes/STATE_KY_TXXVIII_C352_S352.080.md) - [KRS § 352.090 352.090 Abandoned parts of mine to be posted -- Sealing](https://www.frixlaw.com/law-library/statutes/STATE_KY_TXXVIII_C352_S352.090.md) - [KRS § 352.100 352.100 Abandoned mine not to be entered -- Exception](https://www.frixlaw.com/law-library/statutes/STATE_KY_TXXVIII_C352_S352.100.md) - [KRS § 352.110 352.110 Mines to have two openings -- Exception -- Condemnation of land for opening](https://www.frixlaw.com/law-library/statutes/STATE_KY_TXXVIII_C352_S352.110.md) - [KRS § 352.120 352.120 Stairways or hoisting devices in shafts -- Passageways to be unobstructed -- Direction signs -- Height and width of escapeway outlets](https://www.frixlaw.com/law-library/statutes/STATE_KY_TXXVIII_C352_S352.120.md) --- Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_KY_TXXVIII_C352_S352.030. Check the current official text before relying on it. Not legal advice.