# Relationship history for MSHA mine 3700064

Current hierarchy: **Thomas  Walsh → Cumberland Quarry Corp. → Cumberland Quarry Corp.**

- 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:** Forte Brothers Inc → Cumberland Quarry Corp.; 1950-01-01 to 1991-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Joseph A  Forte → Cumberland Quarry Corp.; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph A  Forte → Forte Brothers Inc; 1950-01-01 to 1991-03-14; source msha-controller-operator-history
- **operator_operates_mine:** Manville Quarry Inc → Cumberland Quarry Corp.; 1991-03-15 to 2003-11-28; source msha-controller-operator-history
- **controller_controls_mine:** Albert  Todesca → Cumberland Quarry Corp.; 1991-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Albert  Todesca → Manville Quarry Inc; 1991-03-15 to 2003-11-28; source msha-controller-operator-history
- **operator_operates_mine:** RIVERVIEW QUARRY LLC → Cumberland Quarry Corp.; 2003-11-29 to 2010-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Douglas  Vaughan Et Al → Cumberland Quarry Corp.; 2003-11-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Douglas  Vaughan Et Al → RIVERVIEW QUARRY LLC; 2003-11-29 to 2010-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Earl  Marsh Et Al → RIVERVIEW QUARRY LLC; 2003-11-29 to 2010-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Cumberland Quarry Corp. → Cumberland Quarry Corp.; 2010-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Thomas  Walsh → Cumberland Quarry Corp.; 2010-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas  Walsh → Cumberland Quarry Corp.; 2010-03-01 to current/open; source msha-controller-operator-history