# Relationship history for MSHA mine 4003557

Current hierarchy: **Sandra  Penland; Jarrod  Penland → Seven Springs Stone → Bear Pen Quarry B**

- 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:** Stacy  McBurger et al → Bear Pen Quarry B; 2018-05-01 to 2019-09-29; source msha-controller-operator-history
- **controller_controls_mine:** Stacy  McBryar Pulido → Bear Pen Quarry B; 2019-09-30 to 2019-10-21; source msha-controller-operator-history
- **controller_controls_mine:** Fresh Beginnings et al → Bear Pen Quarry B; 2019-10-22 to 2021-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Stone For You → Bear Pen Quarry B; 2021-08-09 to 2022-10-10; source msha-controller-operator-history
- **controller_controls_operator:** Stacy  McBurger et al → Stone For You; 2021-08-09 to 2019-09-29; source msha-controller-operator-history
- **controller_controls_operator:** Robert D Zollinger et al → Stone For You; 2021-08-09 to 2019-09-29; source msha-controller-operator-history
- **controller_controls_operator:** Stacy  McBryar Pulido → Stone For You; 2021-08-09 to 2019-10-21; source msha-controller-operator-history
- **controller_controls_operator:** Fresh Beginnings et al → Stone For You; 2021-08-09 to 2021-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Stacy  McBryar Pulido et al → Stone For You; 2021-08-09 to 2021-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Alexis  Tarumianz et al → Stone For You; 2021-08-09 to 2021-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Alexis  Tarumianz → Bear Pen Quarry B; 2021-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Alexis  Tarumianz → Stone For You; 2021-09-01 to 2022-10-10; source msha-controller-operator-history
- **operator_operates_mine:** Seven Springs Stone → Bear Pen Quarry B; 2022-10-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sandra  Penland et al → Bear Pen Quarry B; 2022-10-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sandra  Penland et al → Seven Springs Stone; 2022-10-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jarrod  Penland et al → Seven Springs Stone; 2022-10-11 to current/open; source msha-controller-operator-history