Labor. Denver Labor charges dismissed against 3 Denver unions. Post Jan. 6, 1950 p.20 Paul L. Styles named to board. Post Feb. 2, 1950 p.1 3 firms ok union shop issues. Post Feb. 14, 1950 P 3 Operating engineers win 2 new contracts. Post Feb. 23, 1950 p.42 Public service employes vote on union shop. Post Feb. 25, 1950 p 3 To hold elections in Deep Rock Water Capitol Packing Co. Post March 5, 1950 p.19