# Relationship history for MSHA mine 1700570

Current hierarchy: **Donald  Conte → Georgia Stone Management LLC → Crotch Island**

- 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:** New England Stone Industries Inc → Crotch Island; 1981-10-01 to 2001-09-13; source msha-controller-operator-history
- **controller_controls_mine:** Antonio C  Ramos → Crotch Island; 1981-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Antonio C  Ramos → New England Stone Industries Inc; 1981-10-01 to 2001-09-13; source msha-controller-operator-history
- **controller_controls_mine:** Antonio C  Ramos → Crotch Island; 1997-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Georgia Stone Industries Inc → Crotch Island; 2001-09-14 to 2024-09-09; source msha-controller-operator-history
- **controller_controls_operator:** Antonio C  Ramos → Georgia Stone Industries Inc; 2001-09-14 to 2024-09-09; source msha-controller-operator-history
- **operator_operates_mine:** Georgia Stone Management LLC → Crotch Island; 2024-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Donald  Conte → Crotch Island; 2024-09-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald  Conte → Georgia Stone Management LLC; 2024-09-10 to current/open; source msha-controller-operator-history