Progress report of joint committee on inductive interference

The Joint Committee on Inductive Interference, authorized by the Railroad Commission of the State of Californiato make investigations into inductive disturbances in telephone and telegraph circuits, as a basis for future regulations of the commission, has issued a second progress report, covering the work done up to December 16, 1913, on the study of two parallels (20 miles and 8 miles) of high-tension three-phase transmission lines and telegraph and telephone circuits in California. Some of the general results and conclusions indicated by a study of the engineers´ reports are given. Until such time as the Joint Committee is prepared to make definite recommendations to the Railroad Commission it will indicate only in a general way the results of its investigation.