# Relationship history for MSHA mine 2301975

Current hierarchy: **Vincent  Scognamiglio; Victor  Glinski → County Line Quarry, LLC → County Line 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:** County Line Quarry → County Line Quarry; 1987-09-01 to 2020-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Roger  Nagel → County Line Quarry; 1987-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roger  Nagel → County Line Quarry; 1987-09-01 to 2020-03-31; source msha-controller-operator-history
- **operator_operates_mine:** KLS Pvg & Const LLC dba Co Line Quarry → County Line Quarry; 2020-04-01 to 2025-09-24; source msha-controller-operator-history
- **controller_controls_mine:** Kelli D  Smith → County Line Quarry; 2020-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kelli D  Smith → KLS Pvg & Const LLC dba Co Line Quarry; 2020-04-01 to 2025-09-24; source msha-controller-operator-history
- **operator_operates_mine:** County Line Quarry, LLC → County Line Quarry; 2025-09-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Victor  Glinski et al → County Line Quarry; 2025-09-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Victor  Glinski et al → County Line Quarry, LLC; 2025-09-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vincent  Scognamiglio et al → County Line Quarry, LLC; 2025-09-25 to current/open; source msha-controller-operator-history