ZLC CTLR QUESTIONED JAC TWR APPLIED VISUAL SEPARATION AND DEP RELEASE REGARDING MISSED APCH ACFT AND IFR DEP.

Narrative

ACFT #1 MISSED APCH RWY 36. JAC TWR HAD VISUAL SEPARATION APPROVED BTWN ACFT #1 AND ACFT #2; 'SYD' (SUBJECT YOUR DISCRETION). JAC TWR RELEASED ACFT #2 AFTER SEEING ACFT #1 FLY OVER RWY 36. ACFT #2 DEPARTED RWY 36 ON A COURSE THAT WAS THE SAME AS THE MISSED APCH FOR ACFT #1. WHEN ACFT #1 CALLED ON FREQ; I CLBED ACFT #1 TO 15000 FT VIA THE RWY 36 MISSED APCH PROC; MAA WAS 12000 FT. I RADAR IDENTED ACFT #1 10 NM N OF JAC LEAVING 12500 FT. ACFT #1 WAS NOW ABOVE MY MIA AND I VECTORED ACFT #1 TO THE LOC FOR ANOTHER APCH. ACFT #2 CHKED ON FREQ CLBING TO 16000 FT. I AMENDED ACFT #2 ALT TO 14000 FT. ACFT #1 WAS INSTRUCTED TO EXPEDITE THROUGH 15000 FT AND MAINTAIN 16000 FT. ACFT #2 WAS IDENTED 10 NM S OF ACFT #1 AND 2000 FT BELOW ACFT #1. NO LOSS OF SEPARATION OCCURRED ON THE RADAR DISPLAY. I TURNED THIS IN TO MY SUPVR. I CONTINUED TO WORK THE REST OF MY SHIFT. ABOUT 3 HRS LATER; THE OPERATIONAL MGR TOLD ME THAT THE TWR MAY HAVE HAD A SYS ERROR. I WAS ALSO TOLD THE TWR CTLR WAS NEW. I DO NOT THINK THE TWR CTLR WILL MAKE THE SAME MISTAKE; BUT THE NEXT TIME THEY GET A NEW CTLR; I HOPE THIS PROC IS TRAINED ON WHEN AN ACFT MAKES A MISSED APCH.