# Relationship history for MSHA mine 4607445

Current hierarchy: **Richard H  Abraham → Talon Resources Inc → Campbells Creek No 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:** Richard H  Abraham et al → Campbells Creek No 2; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lawson W  Hamilton Jr → Campbells Creek No 2; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** V Coal Company Inc → Campbells Creek No 2; 1988-01-01 to 1989-05-29; source msha-controller-operator-history
- **controller_controls_mine:** Vance Michael → Campbells Creek No 2; 1988-01-01 to 1989-05-29; source msha-controller-operator-history
- **controller_controls_operator:** Vance Michael → V Coal Company Inc; 1988-01-01 to 1989-05-29; source msha-controller-operator-history
- **operator_operates_mine:** Ford Coal Company → Campbells Creek No 2; 1989-05-30 to 1989-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Lawson W  Hamilton Jr → Ford Coal Company; 1989-05-30 to 1989-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Red River Valley Coal Company → Campbells Creek No 2; 1989-08-01 to 1989-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Ashland Inc et al → Campbells Creek No 2; 1989-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc et al → Red River Valley Coal Company; 1989-08-01 to 1989-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Talon Resources Inc → Campbells Creek No 2; 1990-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard H  Abraham et al → Talon Resources Inc; 1990-01-01 to current/open; source msha-controller-operator-history