Bell Oil and Gas Company. No. 8438, in circuit court of appeals for 5th circuit, National Labor Relations Board v. Bell Oil and Gas Company, Burk-Divide Oil Company, Consolidated, and Reno Oil Company, on rule requiring respondents to show cause why they should not be adjudged in contempt; 1, petition of National Labor Relations Board for rehearing and for oral argument on this petition, 2, brief in support of said petition.