(225 ILCS 705/31.29) (from Ch. 96 1/2, par. 3129)
Sec. 31.29.
In a gassy mine, all workings which are abandoned after the
effective date of this Act, or the date such mine was classified a gassy
mine, whichever is later, shall be sealed or ventilated. If such workings
are sealed, the sealing shall be done in a substantial manner with
incombustible material; however, some other type of material may be used
provided prior approval has been obtained from the Mining Board. One or
more of the seals of every sealed area shall be fitted with a pipe and cap
or valve to permit the sampling of gases and the measuring of hydrostatic
pressure behind such seals. For the purposes of this Section, workings
within a panel shall not be deemed to be abandoned until such panel is
abandoned.
(Source: Laws 1955, p. 2012.)
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