Evening Republican, Volume 16, Number 1, Rensselaer, Jasper County, 1 January 1912 — Pure Air in London Tubes. [ARTICLE]

Pure Air in London Tubes.

The objection to underground travel In London—that the air is Impure and often stifling—will soon be .overcome if the plans and promises of the Central Railway company are carried out. These plans include a system of ventilation capable of pumping daily 80,000,000 cubic feet of ozonized air into the tubes and tunnels of the company. One plant is already ki operation and an official of the company states! that it will pump 400,<y)0 cubic feet of pure air per hour Into the station, or at the rate of 900 cubic fSet per person. The air is drawn from outside through a filter screen, which removes dust and dirt and Impure gases. A’ part of the air is then highly ozonized by being passed over highly electrified plates, the proportion of ozone in the whole being one part in 10,000,000. The air is driven by fans to the level of the bottom of the station, and two-thirds of it is distributed over the platforms by ducts, with «outlets at a height of seven feet above the plate form. The remainder is driven lute the tunnel • *£' : . '