Newcoal Corporation. In matter of Newcoal Corporation and United Mine Workers of America, District No. 23, affiliated with C. I. O. and Progressive Mine Workers of America, District No. 5, affiliated with A. F. of L., party to contract; in matter of [same] and United Mine Workers of America, District No. 23, affiliated with C. I. O., cases nos. C-1410 and R-1609; certification of representatives, Jan. 18, 1940.