What was found
(CAN) DURING CRUISE PHASE AT 43000FT THE CREW BEGAN TO FEEL LOW FREQUENCY VIBRATIONS THROUGH THE FLOOR OF THE A/C IMMEDIATELY FOLLOWED BY A LEFT HYDRAULIC TEMPERATURE INCREASE. THE CREW THEN PROCEEDED TO RUN THEIR CHECKLIST BUT SHORTLY AFTER THE A/C DISPLAYED A LOW LEFT HYDRAULIC PRESSURE MESSAGE. CREW THEN IMMEDIATELY CONTACTED ATC TO DIVERT. CREW CHOSE TO DIVERT TO THE NEAREST AIRPORT WITH A LARGE RUNWAY AND EMERGENCY SERVICES AVAILABLE DUE TO A LOSS OF CONTROL OF THE NOSE WHEEL STEERING WHEN WHEN THE LEFT HYDRAULIC PUMP LOST PRESSURE. EMERGENCY SERVICES MET THE A/C ON RUNWAY UPON LANDING. MAINTENANCE FOUND A LOT OF METAL IN THE LEFT EDP CASE DRAIN FILTER. REPLACED EDP AND FILTERS. (TC# 20190702008)