# Relationship history for MSHA mine 4608990

Current hierarchy: **James C  Justice II → Bluestone Coal Corporation → No. 39 Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** James C  Justice II et al → No. 39 Mine; 1950-01-01 to 2009-05-06; source msha-controller-operator-history
- **operator_operates_mine:** Bluestone Coal Corporation → No. 39 Mine; 2003-04-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James C  Justice II et al → Bluestone Coal Corporation; 2003-04-11 to 2009-05-06; source msha-controller-operator-history
- **controller_controls_mine:** Mechel Oao → No. 39 Mine; 2009-05-07 to 2015-02-11; source msha-controller-operator-history
- **controller_controls_operator:** Mechel Oao → Bluestone Coal Corporation; 2009-05-07 to 2015-02-11; source msha-controller-operator-history
- **controller_controls_mine:** James C  Justice II et al → No. 39 Mine; 2015-02-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James C  Justice II et al → Bluestone Coal Corporation; 2015-02-12 to current/open; source msha-controller-operator-history