Okla. Stat. tit. 45, § 45-415: Dangerous conditions - Additional shafts

The Mine Inspector is hereby authorized, empowered and directed

to thoroughly inspect all underground excavations in all said mines

as often as the Inspector may deem proper, to ascertain the

condition of said underground excavations with respect to the safety

of all employees working in such underground excavation; and, if

after such examination the Inspector shall find that the safety of

the employees engaged in working in such excavations is imperiled by

reason of there being only one shaft or outlet by which a distinct

means of ingress and egress is always available to such employees,

it shall be the right and duty of such Inspector to immediately

notify the operator of such mine, in writing, specifying the

particular underground excavations so found to be dangerous, and

direct the operator to, within thirty (30) days after receiving such

notice, commence to sink another shaft or provide another outlet for

such underground excavation and prosecute the sinking of such shaft

or the securing of another outlet with all due diligence until the

same is completed. And the Mine Inspector aforesaid shall have the

power if he deems it for the safety of the employees, to order the

operator of said mine to withdraw all employees engaged in working

in such underground excavations so found to be unsafe or dangerous,

until such other shaft or outlet shall have been completed, or until

further notified by such Inspector.