T/C 912 Authority To Proceed For Relief Engine/Train Into An Automatic Bloc K Signalling Section. , And Each Form 3 Copies Will Be Same Number.(1X3X50=150 Pages Of 60 Gsm Or More In Triplicate Serial Number ) Sample Attached With Special Red Ink Printing On Front And Back S De. Note:- Sample Should Be Approved By Aom/Dnr Before Bulk Supply Of Material. ]