*938Motion in Nos. 691, 694 and 695 for leave to file brief of the Ohio Fuel Gas Co. et al., as amici curiae, denied. Motions in No. 694 for leave to file brief and reply brief of Natural Gas Pipeline Co. of America et al., as amici curiae, denied. Petitions for writs of certiorari to the United States Court of Appeals for the District of Columbia Circuit granted.

*939Reported below: 102 U. S. App. D. C. 77, 250 F. 2d 402.