B757-200 CREW HAD SMOKE IN COCKPIT AFTER LNDG AT MKE.

Narrative

FOLLOWING A NORMAL APCH AND LNDG IN MKE; AND NEAR THE END OF THE ROLLOUT PORTION OF RWY 1L; THE FO STATED 'SMOKE; SMOKE!' I COULD SEE A LIGHT WHITISH MIST OR HAZE DEVELOP IN THE COCKPIT. THERE WAS NO ODOR ASSOCIATED WITH THE HAZE. I TURNED OFF THE RWY ONTO A TXWY AND ASKED FO TO CALL FLT ATTENDANTS TO GET INFO ON WHAT THEY SEE OR SMELL. AT THIS POINT; THE HAZE OR SMOKE WAS RAPIDLY DISSIPATING IN THE COCKPIT. THE FLT ATTENDANTS INDICATED THE PRESENCE OF THE SAME HAZE OR SMOKE; BUT THAT IT WAS DISSIPATING ALSO. THE ATC TWR; UPON INQUIRY; INDICATED THEY SAW NO FIRE. STILL NO UNUSUAL ODOR OR SMELL OF BURNING OR SMOLDERING. TAXI TO GATE WAS NORMAL. EMER VEHICLES REQUESTED AS PRECAUTION. ACFT PARKED AT GATE AND PAX DEPLANED NORMALLY. WE NOTICED A THIN FILM OF 'DUST' ON EVERYTHING IN THE COCKPIT. THE DUST HAD A GRITTY OR ABRASIVE FEEL TO IT. SOON; AN MKE ARPT OPS MGR ENTERED THE COCKPIT. HE SAID HE HAD AUTH THE SANDING OF RWY 1L TWICE JUST PRIOR TO OUR ARR. THE FO NOTED IN WALKAROUND IN MKE THAT THE AIR CONDITIONING PACK INLET DOORS WERE COATED WITH SAND. BOTH ENG SPINNERS HAD A COATING OF FINE DUST OR SAND ALSO. NO ENG ABNORMALITIES WERE OBSERVED DURING LNDG; ROLLOUT OR TAXI IN. THERE WERE NO ASSOCIATED EICAS MESSAGES OR OTHER WARNING/CAUTION MESSAGES DISPLAYED AT ANY TIME. I CONTACTED OUR DISPATCHER AND MAINT PERSONNEL FOR COMPLETE BRIEFING.