# Relationship history for MSHA mine 3606279

Current hierarchy: **Robert E  Yarger → Green Power Inc → Valley Coal #1 Slope**

- 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

- **controller_controls_mine:** Wolfgang Gene → Valley Coal #1 Slope; 1975-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M S W Coal Company → Valley Coal #1 Slope; 1976-11-01 to 1987-05-06; source msha-controller-operator-history
- **controller_controls_operator:** Wolfgang Gene → M S W Coal Company; 1976-11-01 to 1987-05-06; source msha-controller-operator-history
- **operator_operates_mine:** Horse Head Coal Company → Valley Coal #1 Slope; 1987-05-07 to 1989-01-24; source msha-controller-operator-history
- **controller_controls_mine:** Molesevich Dennis → Valley Coal #1 Slope; 1987-05-07 to 1989-01-24; source msha-controller-operator-history
- **controller_controls_operator:** Molesevich Dennis → Horse Head Coal Company; 1987-05-07 to 1989-01-24; source msha-controller-operator-history
- **operator_operates_mine:** Kraynak Coal Corp → Valley Coal #1 Slope; 1989-01-25 to 1989-10-15; source msha-controller-operator-history
- **controller_controls_mine:** Kraynak Raymond J → Valley Coal #1 Slope; 1989-01-25 to 1989-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Kraynak Raymond J → Kraynak Coal Corp; 1989-01-25 to 1989-10-15; source msha-controller-operator-history
- **operator_operates_mine:** Green Power Inc → Valley Coal #1 Slope; 1989-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert E  Yarger → Valley Coal #1 Slope; 1989-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert E  Yarger → Green Power Inc; 1989-10-16 to current/open; source msha-controller-operator-history