# Relationship history for MSHA mine 2901924

Current hierarchy: **Sharlotte A  Rierson → American Aggregate → Felix Pit**

- 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:** Beavers Robert & A E → Felix Pit; 1979-10-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Interstate Paving → Felix Pit; 1983-08-01 to 1984-06-06; source msha-controller-operator-history
- **controller_controls_mine:** Beagle Virgil & B C Glasgow → Felix Pit; 1983-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Beagle Virgil & B C Glasgow → Interstate Paving; 1983-08-01 to 1984-06-06; source msha-controller-operator-history
- **operator_operates_mine:** Beavers Sand & Gravel Of Roswell Inc → Felix Pit; 1984-06-07 to 1989-05-07; source msha-controller-operator-history
- **controller_controls_operator:** Beavers Robert & A E → Beavers Sand & Gravel Of Roswell Inc; 1984-06-07 to 1989-05-07; source msha-controller-operator-history
- **operator_operates_mine:** Booher Sand & Gravel → Felix Pit; 1989-05-08 to 2007-05-16; source msha-controller-operator-history
- **controller_controls_mine:** Olan  Booher → Felix Pit; 1989-05-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Olan  Booher → Booher Sand & Gravel; 1989-05-08 to 2007-05-16; source msha-controller-operator-history
- **operator_operates_mine:** American Aggregate → Felix Pit; 2007-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sharlotte A  Rierson → Felix Pit; 2007-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sharlotte A  Rierson → American Aggregate; 2007-05-17 to current/open; source msha-controller-operator-history