# Relationship history for MSHA mine 4002580

Current hierarchy: **Lindsay Paris Mac → B & D Coal Company → Coal Halg Fac #1**

- 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:** Javelin Mining Inc → Coal Halg Fac #1; 1980-01-01 to 1982-11-04; source msha-controller-operator-history
- **controller_controls_mine:** Bass J M Jr → Coal Halg Fac #1; 1980-01-01 to 1982-11-04; source msha-controller-operator-history
- **controller_controls_operator:** Bass J M Jr → Javelin Mining Inc; 1980-01-01 to 1982-11-04; source msha-controller-operator-history
- **operator_operates_mine:** Javelin Mining Inc → Coal Halg Fac #1; 1982-11-05 to 1984-04-24; source msha-controller-operator-history
- **controller_controls_mine:** Aytes Gene Et Al → Coal Halg Fac #1; 1982-11-05 to 1984-04-24; source msha-controller-operator-history
- **controller_controls_operator:** Aytes Gene Et Al → Javelin Mining Inc; 1982-11-05 to 1984-04-24; source msha-controller-operator-history
- **operator_operates_mine:** Scarab Energy Corp → Coal Halg Fac #1; 1984-04-25 to 1989-03-30; source msha-controller-operator-history
- **controller_controls_mine:** Reeves Terry C → Coal Halg Fac #1; 1984-04-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reeves Terry C → Scarab Energy Corp; 1984-04-25 to 1989-03-30; source msha-controller-operator-history
- **controller_controls_mine:** Lindsay Paris Mac → Coal Halg Fac #1; 1987-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B & D Coal Company → Coal Halg Fac #1; 1989-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lindsay Paris Mac → B & D Coal Company; 1989-03-31 to current/open; source msha-controller-operator-history