# Relationship history for MSHA mine 4003624

Current hierarchy: **Sandra  Penland; Jarrod  Penland → SEVEN SPRINGS STONE → SEVEN SPRINGS FIELDSTONE**

- 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:** Sandra  Penland et al → SEVEN SPRINGS FIELDSTONE; 2022-10-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Seven Springs Stone → SEVEN SPRINGS FIELDSTONE; 2024-08-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sandra  Penland et al → Seven Springs Stone; 2024-08-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jarrod  Penland et al → Seven Springs Stone; 2024-08-09 to current/open; source msha-controller-operator-history