# Relationship history for MSHA mine 4405787

Current hierarchy: **Jessie  Meadows → Jamb Mining Inc → No 1 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

- **operator_operates_mine:** Condor Coal Inc → No 1 Mine; 1981-10-01 to 1987-06-29; source msha-controller-operator-history
- **controller_controls_mine:** Boardwine Richard → No 1 Mine; 1981-10-01 to 1987-06-29; source msha-controller-operator-history
- **controller_controls_operator:** Boardwine Richard → Condor Coal Inc; 1981-10-01 to 1987-06-29; source msha-controller-operator-history
- **operator_operates_mine:** Buffalo Land Company Inc → No 1 Mine; 1987-06-30 to 1988-04-03; source msha-controller-operator-history
- **controller_controls_mine:** Larry  Long → No 1 Mine; 1987-06-30 to 1988-04-03; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Long → Buffalo Land Company Inc; 1987-06-30 to 1988-04-03; source msha-controller-operator-history
- **operator_operates_mine:** Jamb Mining Inc → No 1 Mine; 1988-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jessie  Meadows → No 1 Mine; 1988-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jessie  Meadows → Jamb Mining Inc; 1988-04-04 to current/open; source msha-controller-operator-history