Survivors of a coal mine flooding that killed 38 in north China late March had all been discharged from hospital after medical treatment, authorities of Shanxi Province said.

The last of the 115 miners who were rescued alive from the flooded Wangjialing Coal Mine was released from hospital on May 13, said a statement of the provincial publicity department Friday.

The identities of the 115 survivors and the 38 dead have been confirmed. But the name list of the victims would not be made public upon the requests of their families, the statement said.

Luo Lin, chief of the State Administration of Work Safety, blamed the flooding on the owner, Huajin Coking Coal Company, for its poor safety measures and negligence, saying the accident "should and could have been avoided."

Local prosecutors have approved the arrest of nine engineers and technicians who were allegedly responsible for neglecting signs of flooding and failing to take proper measures before the Wangjialing Coal Mine was flooded on March 28.

A total of 115 miners were rescued alive on April 5 after being trapped underground for more than a week.