# Relationship history for MSHA mine 1800803

Current hierarchy: **David J  Stewart → York Building Products Co Inc → Ingleside 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

- **controller_controls_mine:** Robert H Stewart III et al → Ingleside Pit; 1950-01-01 to 2022-09-08; source msha-controller-operator-history
- **controller_controls_mine:** David J  Stewart → Ingleside Pit; 2014-04-21 to 2016-03-07; source msha-controller-operator-history
- **controller_controls_mine:** Patuxent Materials Inc et al → Ingleside Pit; 2016-03-08 to 2021-01-03; source msha-controller-operator-history
- **operator_operates_mine:** Eastern Shore Sand and Gravel LLC → Ingleside Pit; 2016-06-22 to 2022-10-26; source msha-controller-operator-history
- **controller_controls_operator:** David J  Stewart → Eastern Shore Sand and Gravel LLC; 2016-06-22 to 2016-03-07; source msha-controller-operator-history
- **controller_controls_operator:** Patuxent Materials Inc et al → Eastern Shore Sand and Gravel LLC; 2016-06-22 to 2021-01-03; source msha-controller-operator-history
- **controller_controls_operator:** York Building Products Company Inc et al → Eastern Shore Sand and Gravel LLC; 2016-06-22 to 2021-01-03; source msha-controller-operator-history
- **controller_controls_mine:** York Building Products Co Inc → Ingleside Pit; 2021-01-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** York Building Products Co Inc → Eastern Shore Sand and Gravel LLC; 2021-01-04 to 2022-10-26; source msha-controller-operator-history
- **controller_controls_mine:** David J  Stewart → Ingleside Pit; 2022-09-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** York Building Products Co Inc → Ingleside Pit; 2022-10-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David J  Stewart → York Building Products Co Inc; 2022-10-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert H Stewart III et al → York Building Products Co Inc; 2022-10-27 to 2022-09-08; source msha-controller-operator-history