# Relationship history for MSHA mine 0102602

Current hierarchy: **Lynn Billy R → Lynn Energy Inc → Black Pond #6 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:** Russell R Don → Black Pond #6 Mine; 1984-06-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Central Mining Inc → Black Pond #6 Mine; 1984-08-01 to 1993-11-12; source msha-controller-operator-history
- **controller_controls_operator:** Russell R Don → Central Mining Inc; 1984-08-01 to 1993-11-12; source msha-controller-operator-history
- **controller_controls_mine:** Lynn Billy R → Black Pond #6 Mine; 1989-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lynn Energy Inc → Black Pond #6 Mine; 1993-11-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lynn Billy R → Lynn Energy Inc; 1993-11-13 to current/open; source msha-controller-operator-history