# Relationship history for MSHA mine 0404965

Current hierarchy: **John D  Chesney → Sydney Peak Stone Inc → Hi Desert Rustic 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:** Hard Rock Veneer → Hi Desert Rustic Stone; 1988-08-01 to 2011-10-05; source msha-controller-operator-history
- **controller_controls_mine:** Harold F  Sims Jr → Hi Desert Rustic Stone; 1988-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harold F  Sims Jr → Hard Rock Veneer; 1988-08-01 to 2011-10-05; source msha-controller-operator-history
- **controller_controls_mine:** Ulti-Solutions Inc → Hi Desert Rustic Stone; 1993-09-03 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Tommy J  Jaworsky et al → Hi Desert Rustic Stone; 2011-06-01 to 2022-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Sanford Stone Quarry, Inc → Hi Desert Rustic Stone; 2011-10-06 to 2014-04-30; source msha-controller-operator-history
- **controller_controls_mine:** David S  Sanford → Hi Desert Rustic Stone; 2011-10-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David S  Sanford → Sanford Stone Quarry, Inc; 2011-10-06 to 2014-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Sydney Peak Stone Inc → Hi Desert Rustic Stone; 2014-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tommy J  Jaworsky et al → Sydney Peak Stone Inc; 2014-05-01 to 2022-12-31; source msha-controller-operator-history
- **controller_controls_operator:** John D  Chesney et al → Sydney Peak Stone Inc; 2014-05-01 to 2022-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Ulti-Solutions Inc → Sydney Peak Stone Inc; 2014-05-01 to 2011-05-31; source msha-controller-operator-history
- **controller_controls_mine:** John D  Chesney → Hi Desert Rustic Stone; 2023-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John D  Chesney → Sydney Peak Stone Inc; 2023-01-01 to current/open; source msha-controller-operator-history