# Relationship history for MSHA mine 5001503

Current hierarchy: **Mark  Cottini; Del  Sandvik; Reed  Dilley → Flintstone Inc. → Tiny Moose 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

- **operator_operates_mine:** Dilley Inc → Tiny Moose Pit; 1986-06-01 to 2016-07-26; source msha-controller-operator-history
- **controller_controls_mine:** Dilley Nancy J → Tiny Moose Pit; 1986-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dilley Nancy J → Dilley Inc; 1986-06-01 to 2016-07-26; source msha-controller-operator-history
- **operator_operates_mine:** Flintstone Inc. → Tiny Moose Pit; 2016-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mark  Cottini et al → Tiny Moose Pit; 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
- **controller_controls_operator:** Reed  Dilley et al → Flintstone Inc.; 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