▁In ▁addition ▁the ▁u - bol ts ▁they ▁used ▁were ▁defect ive ; ▁the ▁manufact urer ▁r ated ▁them ▁for ▁twice ▁the ▁load ▁they ▁were ▁good ▁for . ▁One ▁of ▁the ▁u - bol ts ▁failed ▁causing ▁the ▁anten na ▁to ▁fall ▁and ▁snap ▁two ▁of ▁the ▁gu y ▁w ires ▁holding ▁the ▁tower ▁u pr ight . ▁ ▁Three ▁workers ▁r iding ▁the ▁anten na ▁to ▁the ▁top ▁of ▁the ▁tower ▁and ▁two ▁standing ▁on ▁the ▁tower ▁itself ▁were ▁killed . ▁ ▁The ▁entire ▁structure ▁col lapsed ▁in ▁less ▁than ▁ 1 7 ▁seconds . ▁Video ▁of ▁the ▁tower ▁collapse ▁shot ▁by ▁one ▁of ▁the ▁station ▁engine ers ▁on ▁site ▁for ▁the ▁to pping ▁off ▁of ▁the ▁tower ▁has ▁been ▁posted ▁in ▁numerous ▁places ▁( including ▁YouTube ). ▁ ▁When ▁the ▁tower ▁was ▁under ▁construction , ▁the ▁newly ▁launched ▁K TX H - TV ▁was ▁using ▁the ▁tower ▁for ▁their ▁local ▁broadcast ing ▁with ▁a ▁side - mount ed ▁anten na . ▁ ▁Month s ▁after ▁the ▁tower ▁dis aster , ▁K TX H ▁borrow ed ▁the ▁former ▁K RI V ▁TV 2 6 ▁transmit ter ▁anten na ▁located ▁on ▁the ▁ ▁One ▁Sh ell ▁Pla za ▁in ▁dow nt own ▁Houston ▁( that ▁building ▁is ▁seen ▁in ▁many ▁pictures ▁of ▁dow nt own ▁Houston . ▁It ▁is ▁totally ▁white ▁with ▁the ▁orange / white ▁anten na ▁m ast ▁on ▁top . ▁All ▁FM ▁stations ▁that ▁were ▁moving ▁to ▁Senior ▁Road ▁had ▁used ▁that ▁site ▁for ▁their ▁transmit ter ▁sites ▁for ▁many