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FAA Advisory Circular AC70/7460-1L (Aircraft Obstruction Lighting) Current Rules for new towers erected after 12/15/2015 or for towers being updated after 12/15/2015.

FAA Advisory Circular AC150/5345-43E Obstruction Light Specifications
Middle Tennessee Tower Work Safety Policy Manual
250 Foot Tall Guyed Tower Constructed by MT2W, 5/13/2015
NIOSH Tower Safety Document
Middle Tennessee Tower Work Safety Policy Manual
Archived Files Possibly of Historical Use
Under Construction