Joseph McKenna, Deserant v. Cerillos Coal Railroad Company…
“ The act of Congress does not give to mine owners the privilege of reasoning on the sufficiency of appliances for ventilation or leave to their judgment the amount of ventilation that is sufficient for the protection of miners. It prescribes the amount of ventilation to be not less than 55 cubic feet per second; it prescribes the machinery to be adequate to force that amount of air through the mine to the face of every working place. Nor does it allow standing gas. It prescribes, on the contrary, that the mine shall be kept clear of standing gas. ”
