# Relationship history for MSHA mine 1518067

Current hierarchy: **James M  Allen → Allen'S Land Improvement Inc → #2 Surface**

- 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

- **operator_operates_mine:** Bottom Fork Coal Company Inc → #2 Surface; 1998-06-01 to 1999-03-18; source msha-controller-operator-history
- **controller_controls_mine:** Eddie D  Lawson et al → #2 Surface; 1998-06-01 to 1999-03-18; source msha-controller-operator-history
- **controller_controls_operator:** Eddie D  Lawson et al → Bottom Fork Coal Company Inc; 1998-06-01 to 1999-03-18; source msha-controller-operator-history
- **operator_operates_mine:** Allen'S Land Improvement Inc → #2 Surface; 1999-03-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James M  Allen → #2 Surface; 1999-03-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James M  Allen → Allen'S Land Improvement Inc; 1999-03-19 to current/open; source msha-controller-operator-history