# Relationship history for MSHA mine 3608816

Current hierarchy: **Jose L  Mayllazhungo → J S William Stone → J S William 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:** Thomas J Bolles → J S William Stone; 1999-10-01 to 2020-11-04; source msha-controller-operator-history
- **controller_controls_mine:** Thomas J  Bolles → J S William Stone; 1999-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas J  Bolles → Thomas J Bolles; 1999-10-01 to 2020-11-04; source msha-controller-operator-history
- **operator_operates_mine:** G & R Stone Supply → J S William Stone; 2020-11-05 to 2022-03-29; source msha-controller-operator-history
- **controller_controls_mine:** Angelica  Altamirano → J S William Stone; 2020-11-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Angelica  Altamirano → G & R Stone Supply; 2020-11-05 to 2022-03-29; source msha-controller-operator-history
- **operator_operates_mine:** J S William Stone → J S William Stone; 2022-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jose L  Mayllazhungo → J S William Stone; 2022-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jose L  Mayllazhungo → J S William Stone; 2022-03-30 to current/open; source msha-controller-operator-history