# Relationship history for MSHA mine 4405396

Current hierarchy: **Francisco Bonnie → D & L Coal Company Inc → D & L Coal Company Inc #2**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Blankenship Joda → D & L Coal Company Inc #2; 1980-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Apache Coal Company Inc → D & L Coal Company Inc #2; 1980-03-01 to 1988-09-14; source msha-controller-operator-history
- **controller_controls_operator:** Blankenship Joda → Apache Coal Company Inc; 1980-03-01 to 1988-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Barton Lendon → D & L Coal Company Inc #2; 1987-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** D & L Coal Company Inc → D & L Coal Company Inc #2; 1988-09-15 to 1991-02-03; source msha-controller-operator-history
- **controller_controls_operator:** Barton Lendon → D & L Coal Company Inc; 1988-09-15 to 1991-02-03; source msha-controller-operator-history
- **operator_operates_mine:** D & L Coal Company Inc → D & L Coal Company Inc #2; 1991-02-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Francisco Bonnie → D & L Coal Company Inc #2; 1991-02-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Francisco Bonnie → D & L Coal Company Inc; 1991-02-04 to current/open; source msha-controller-operator-history