    Sentence iin 1999. Nist  Found rghe Port Authority    issued *Quidelines: fo:  upgrade «the Reena?  TO.3 thickness. oF: 72  Anehes. - :    Sentence 2 The. NIST  discovered that. im. 1999  tHe: Part: Authority issuéd  quidelines :to,. upgrade. ‘the  fireproofing to 3 thickness.  cof. t:i7 2 inchés.*:    i