Silver Creek Communications Annex was a 373.7 metres ( 1226 ft ) tall guyed mast used by the USAF Survivable Low Frequency Communications System Site, which was built near Silver Creek, Nebraska at 41°20′46″N 97°43′18″W / 41.34611°N 97.72167°W / 41.34611; -97.72167 .

The SAC SLFCS site at Silver Creek was built as a project assigned to the 32d Communications Squadron.

[1] Silver Creek's radio tower was a mast radiator insulated against ground, which provided VLF communication to ground and mobile nuclear missile facilities during the Cold War.

The facility was partially built into the ground and was designed to withstand a moderate nuclear blast from a distance of 10 miles (16 km).

The facility was self-sustaining and employed a sophisticated ventilation system as well as backup diesel generators.