LIGNITE MINE “PROSILIO-POLYRRACHO” (PERFECTURE OF KOZANI-WEST MACEDONIA- NORTH GREECE)
EXPLOITATION OF QUARTZ DEPOSIT AT “MELITI” (FLORINA PREFECTURE-WEST MACEDONIA-NORTH GREECE)
LIGNITE MINE “PROSILIO-POLYRRACHO” (PERFECTURE OF KOZANI-WEST MACEDONIA- NORTH GREECE)
EXPLOITATION OF QUARTZ DEPOSIT AT “MELITI” (FLORINA PREFECTURE-WEST MACEDONIA-NORTH GREECE)