# Relationship history for MSHA mine 4406976

Current hierarchy: **Metinvest B V → Black Diamond Company → Bristol 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Fred D  Matney  et al → Bristol Mine; 1983-01-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Southern Mining Co → Bristol Mine; 1985-11-27 to 2006-01-01; source msha-controller-operator-history
- **controller_controls_mine:** Gary A  Horn → Bristol Mine; 1992-02-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Black Diamond Company → Bristol Mine; 1999-12-01 to 2000-05-29; source msha-controller-operator-history
- **controller_controls_operator:** Southern Mining Co → Black Diamond Company; 1999-12-01 to 2000-05-29; source msha-controller-operator-history
- **operator_operates_mine:** Raintree Coal Company → Bristol Mine; 2000-05-30 to 2000-06-20; source msha-controller-operator-history
- **controller_controls_operator:** Gary A  Horn → Raintree Coal Company; 2000-05-30 to 2000-06-20; source msha-controller-operator-history
- **operator_operates_mine:** Bristol Coal Corp → Bristol Mine; 2000-06-21 to 2004-09-28; source msha-controller-operator-history
- **controller_controls_operator:** Fred D  Matney  et al → Bristol Coal Corp; 2000-06-21 to 2004-09-28; source msha-controller-operator-history
- **controller_controls_operator:** Hank K  Matney  et al → Bristol Coal Corp; 2000-06-21 to 2004-09-28; source msha-controller-operator-history
- **controller_controls_operator:** Rick A  Matney  et al → Bristol Coal Corp; 2000-06-21 to 2004-09-28; source msha-controller-operator-history
- **operator_operates_mine:** Black Diamond Company → Bristol Mine; 2004-09-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Southern Mining Co → Black Diamond Company; 2004-09-29 to 2006-01-01; source msha-controller-operator-history
- **controller_controls_mine:** United  Company → Bristol Mine; 2006-01-02 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_operator:** United  Company → Black Diamond Company; 2006-01-02 to 2000-05-29; source msha-controller-operator-history
- **controller_controls_operator:** United  Company → Black Diamond Company; 2006-01-02 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Metinvest B V → Bristol Mine; 2009-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Metinvest B V → Black Diamond Company; 2009-04-30 to 2000-05-29; source msha-controller-operator-history
- **controller_controls_operator:** Metinvest B V → Black Diamond Company; 2009-04-30 to current/open; source msha-controller-operator-history