# Relationship history for MSHA mine 2003524

Current hierarchy: **Michelle M Shattuck; Mark V Shattuck → Shattuck Stone & Gravel LLC → Lyons Stone**

- 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:** Lyons Stone → Lyons Stone; 2016-01-18 to 2018-12-18; source msha-controller-operator-history
- **controller_controls_mine:** Mark  Shattuck → Lyons Stone; 2016-01-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Shattuck → Lyons Stone; 2016-01-18 to 2018-12-18; source msha-controller-operator-history
- **operator_operates_mine:** Shattuck Stone & Gravel LLC → Lyons Stone; 2018-12-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mark V Shattuck et al → Lyons Stone; 2018-12-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark V Shattuck et al → Shattuck Stone & Gravel LLC; 2018-12-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michelle M Shattuck et al → Shattuck Stone & Gravel LLC; 2018-12-19 to current/open; source msha-controller-operator-history