# Relationship history for MSHA mine 0203275

Current hierarchy: **Clarence E Morgan; Clay T Morgan → MORE SAND LLC → MORE SAND**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** More Sand LLC → MORE SAND; 2011-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Barbara J  Morgan et al → MORE SAND; 2011-05-09 to 2022-05-09; source msha-controller-operator-history
- **controller_controls_operator:** Barbara J  Morgan et al → More Sand LLC; 2011-05-09 to 2022-05-09; source msha-controller-operator-history
- **controller_controls_operator:** Clay  Morgan et al → More Sand LLC; 2011-05-09 to 2022-05-09; source msha-controller-operator-history
- **controller_controls_operator:** Edward  Morgan et al → More Sand LLC; 2011-05-09 to 2022-05-09; source msha-controller-operator-history
- **controller_controls_mine:** Clarence E Morgan et al → MORE SAND; 2022-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clarence E Morgan et al → More Sand LLC; 2022-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clay T Morgan et al → More Sand LLC; 2022-05-10 to current/open; source msha-controller-operator-history