Ohio Code § 1563.02

§ 1563.02.

As used in this chapter and Chapters 1561., 1565., and 1567. of the Revised Code,

a gaseous mine is: (A) A mine in which methane has been ignited; (B) A mine in which methane has been detected in any of the open workings thereof by

a permissible flame safety lamp; (C) A mine in which one fourth of one per cent or more of methane has been found in a

sample of air taken in any of the open workings thereof upon analysis thereof by the

mine laboratory provided for by section 1561.27 of the Revised Code .  If such sample of air contains less than one half of one per cent of methane and

if no other sample of air, taken in any of the open workings of such mine within twenty-four

hours of the time such first-mentioned sample was taken, is, upon analysis by said

laboratory, found to contain one fourth of one per cent or more of methane, such mine

is not a gaseous mine unless a sample of air thereafter taken in any of the open workings

of such mine and prior to ten days after the date upon which such first-mentioned

sample was analyzed is, upon analysis by said laboratory, found to contain one fourth

of one per cent or more of methane.