(LEAD) Lee calls for thorough probe of mine blast, vows necessary measures
AI Summary
South Korean President Lee Jae Myung called for a thorough investigation into a mine blast and pledged that necessary measures would be taken. The supplied excerpt does not specify the mine's location, cause, or casualties.
SEOUL, Sept. 29 (Yonhap) -- President Lee Jae Myung on Tuesday called for a thor...