In 1999 , NIST found , the Port Authority issued guidelines to upgrade the fireproofing to a thickness of 1 1 / 2 inches .

The NIST discovered that in 1999 the Port Authority issued guidelines to upgrade the fireproofing to a thickness of 1 1 / 2 inches .

Please tell me if the sentences above mean the same.
Pick your answer from:
[A]. no;
[B]. yes;
[B].