# Relationship history for MSHA mine 3101915

Current hierarchy: **Robert  Hanna; Charles H  Manning III → B E Singleton & Sons Inc → Greenville 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:** B E  Singleton Jr → Greenville Pit; 1950-01-01 to 2014-08-06; source msha-controller-operator-history
- **operator_operates_mine:** B E Singleton & Sons Inc → Greenville Pit; 1980-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** B E  Singleton Jr → B E Singleton & Sons Inc; 1980-05-01 to 2014-08-06; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Hanna et al → Greenville Pit; 2014-08-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Hanna et al → B E Singleton & Sons Inc; 2014-08-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles H  Manning III et al → B E Singleton & Sons Inc; 2014-08-07 to current/open; source msha-controller-operator-history