# Relationship history for MSHA mine 5002050

Current hierarchy: **Mark  Cottini; Del  Sandvik; Reed  Dilley → Flintstone, Inc → Flintstone Petrock**

- 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:** Flintstone, Inc → Flintstone Petrock; 2016-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Del  Sandvik et al → Flintstone Petrock; 2016-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Del  Sandvik et al → Flintstone, Inc; 2016-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reed  Dilley et al → Flintstone, Inc; 2016-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Cottini et al → Flintstone, Inc; 2016-07-27 to current/open; source msha-controller-operator-history