Wire taping Trade unions want wiretapped evidence suppressed ; snaging Grand Jury probe into construction fires. Post Jy 26, 1972 P 3 Supreme Court adked to halt Denver District Court proceedings against construction union leaders, apprehended through wire tapping. RMN Je 7, 1972 p.5 Denver District Judge Neil Horan ordered to halt hearings in wire tap case. RMN Je 9, 1972 p.5 Post Je 9, 1972 p.3