In N L R B v. United Mine Workers of America, 429 F.2d 141 (3 Cir. 1970) this court granted enforcement of the Board's order prohibiting the UMW from restraining and coercing employees of Mears Coal Company, one of the respondents here, and from restraining and coercing members of the SLU in their rights guaranteed by section 7 of the National Labor Relations Act.