# Relationship history for MSHA mine 1505245

Current hierarchy: **Sev.en Global Investments a.s. → Pine Branch Mining LLC → Hoyt Tipple**

- 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:** River Processing Inc → Hoyt Tipple; 1950-01-01 to 1973-03-21; source msha-controller-operator-history
- **controller_controls_mine:** Elmer  Whitaker → Hoyt Tipple; 1950-01-01 to 1987-04-21; source msha-controller-operator-history
- **controller_controls_operator:** Elmer  Whitaker → River Processing Inc; 1950-01-01 to 1973-03-21; source msha-controller-operator-history
- **controller_controls_mine:** David A  Duff → Hoyt Tipple; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** River Processing Inc → Hoyt Tipple; 1973-03-22 to 1983-12-20; source msha-controller-operator-history
- **controller_controls_mine:** Pargas Inc → Hoyt Tipple; 1973-03-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pargas Inc → River Processing Inc; 1973-03-22 to 1983-12-20; source msha-controller-operator-history
- **controller_controls_mine:** Edward L Clemons Estate → Hoyt Tipple; 1977-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** River Processing Inc → Hoyt Tipple; 1983-12-21 to 1989-05-01; source msha-controller-operator-history
- **controller_controls_mine:** Coal Ridge Fuels Of Hazard Inc → Hoyt Tipple; 1983-12-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Coal Ridge Fuels Of Hazard Inc → River Processing Inc; 1983-12-21 to 1989-05-01; source msha-controller-operator-history
- **operator_operates_mine:** Haz-Coal Inc → Hoyt Tipple; 1989-05-02 to 1991-01-01; source msha-controller-operator-history
- **controller_controls_operator:** Edward L Clemons Estate → Haz-Coal Inc; 1989-05-02 to 1991-01-01; source msha-controller-operator-history
- **operator_operates_mine:** Pine Branch Coal Sales Inc → Hoyt Tipple; 1991-01-02 to 2012-11-08; source msha-controller-operator-history
- **controller_controls_operator:** David A  Duff → Pine Branch Coal Sales Inc; 1991-01-02 to 2012-11-08; source msha-controller-operator-history
- **operator_operates_mine:** Pine Branch Mining LLC → Hoyt Tipple; 2012-11-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas A  Potter et al → Hoyt Tipple; 2012-11-09 to 2013-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Thomas A  Potter et al → Pine Branch Mining LLC; 2012-11-09 to 2013-06-30; source msha-controller-operator-history
- **controller_controls_operator:** John M  Potter et al → Pine Branch Mining LLC; 2012-11-09 to 2013-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Blackhawk Mining LLC → Hoyt Tipple; 2013-07-01 to 2020-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Blackhawk Mining LLC → Pine Branch Mining LLC; 2013-07-01 to 2020-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Sev.en Global Investments a.s. → Hoyt Tipple; 2020-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sev.en Global Investments a.s. → Pine Branch Mining LLC; 2020-06-01 to current/open; source msha-controller-operator-history