Families of the six Mpumalanga learners who died in a collision between a scholar transport bus and goods train have called for justice to prevail ion the wake of the tragedy.  This as investigations are underway to determine the cause of the accident.  Six learners died and the 19 others seriously injured are receiving treatment in different hospitals.  Deputy Transport Minister, Mkhuleko Hlengwa and provincial MEC's visited the school, the scene of the accident and the victims in hospital.  Motsebi wa Monareng reports.....