# Relationship history for MSHA mine 3503320

Current hierarchy: **Pete  O'Neil → Jefferson State Rock Products Inc → Lowland Pits**

- 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:** Keno Rock Products → Lowland Pits; 1988-10-01 to 1992-04-30; source msha-controller-operator-history
- **controller_controls_mine:** George  Selles et al → Lowland Pits; 1988-10-01 to 1992-04-30; source msha-controller-operator-history
- **controller_controls_operator:** George  Selles et al → Keno Rock Products; 1988-10-01 to 1992-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Keno Rock Products Inc → Lowland Pits; 1992-05-01 to 2002-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Esther  O'Neil → Lowland Pits; 1992-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Esther  O'Neil → Keno Rock Products Inc; 1992-05-01 to 2002-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Jefferson State Rock Products Inc → Lowland Pits; 2003-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pete  O'Neil → Lowland Pits; 2003-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pete  O'Neil → Jefferson State Rock Products Inc; 2003-01-01 to current/open; source msha-controller-operator-history