Golden, Colo.—Crain Communications, the publisher of BtoB, announced Monday that it has moved its Colorado office from Denver to nearby Golden, Colo. The office is headquarters for RCR Wireless News. It also houses editorial staff for Business Insurance. The new address is 1746 Cole Blvd., Suite 150, Golden, Colo. 80401. The phone number remains the same: (303) 733-2500.