Labor. Laws and legislation. Colorado Labor-peace law signed by Vivian. 2YN Ap 4, 1943 P-5 Goes into effect in Colorado. RMN Jy 1, 1943 p.18 Decision appealed to Supreme court. RMN Ja 30, 1944 p.14 Supreme court voids two clauses in Labor Act. Unions hail ruling. RMN D 22, 1944 p.16 Faces review by high court. Post S 5, 1947 p.25 Supreme court to pass. RMN N 11, 1947 p.5 0