# Relationship history for MSHA mine 0901060

Current hierarchy: **Antonio C  Ramos → Georgia Stone Industries, Inc. → Silver Cloud Quarry**

- 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:** Silver Cloud Granite Inc → Silver Cloud Quarry; 1991-04-01 to 1997-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Stone Connection Inc → Silver Cloud Quarry; 1991-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stone Connection Inc → Silver Cloud Granite Inc; 1991-04-01 to 1997-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Antonio C  Ramos → Silver Cloud Quarry; 1997-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Acme Granite Company Inc → Silver Cloud Quarry; 1997-07-01 to 2002-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Marvin Leon  Veal → Silver Cloud Quarry; 1997-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marvin Leon  Veal → Acme Granite Company Inc; 1997-07-01 to 2002-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Fletcher Granite Company of Georgia LLC → Silver Cloud Quarry; 2002-10-01 to 2010-11-14; source msha-controller-operator-history
- **controller_controls_mine:** V B  Castellani  et al → Silver Cloud Quarry; 2002-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** V B  Castellani  et al → Fletcher Granite Company of Georgia LLC; 2002-10-01 to 2010-11-14; source msha-controller-operator-history
- **controller_controls_operator:** Kathleen  Herbert et al → Fletcher Granite Company of Georgia LLC; 2002-10-01 to 2010-11-14; source msha-controller-operator-history
- **operator_operates_mine:** Georgia Stone Industries, Inc. → Silver Cloud Quarry; 2010-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Antonio C  Ramos → Georgia Stone Industries, Inc.; 2010-11-15 to current/open; source msha-controller-operator-history