Archaeological evidence shows that the area was already settled in the Late Bronze Age and Iron Age . In 1755 deposits of coal were discovered in the area and the town 's economic development began . Coal mining was one of the area 's main activities until 1995 , when the last mines were closed . In 2010 , Zagorje ob Savi was heavily affected by floods
heavily affected by floods
2010 Slovenia floods
Zagorje ob Savi