# Relationship history for MSHA mine 4402991

Current hierarchy: **Doug  Dalton → Salem Stone Corporation → FLOYD 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:** Pine Creek Stone Corp → FLOYD QUARRY; 1950-01-01 to 1999-06-14; source msha-controller-operator-history
- **controller_controls_mine:** R P  Shank → FLOYD QUARRY; 1950-01-01 to 1999-06-14; source msha-controller-operator-history
- **controller_controls_operator:** R P  Shank → Pine Creek Stone Corp; 1950-01-01 to 1999-06-14; source msha-controller-operator-history
- **controller_controls_mine:** Doug  Dalton → FLOYD QUARRY; 1983-01-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Shooting Creek Quarry LLC → FLOYD QUARRY; 1999-06-15 to 2009-01-06; source msha-controller-operator-history
- **controller_controls_mine:** Terry E  Reed → FLOYD QUARRY; 1999-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terry E  Reed → Shooting Creek Quarry LLC; 1999-06-15 to 2009-01-06; source msha-controller-operator-history
- **operator_operates_mine:** R&S STONE, INC. → FLOYD QUARRY; 2009-01-07 to 2015-05-28; source msha-controller-operator-history
- **controller_controls_mine:** Terry Garth  Reed et al → FLOYD QUARRY; 2009-01-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terry Garth  Reed et al → R&S STONE, INC.; 2009-01-07 to 2015-05-28; source msha-controller-operator-history
- **controller_controls_operator:** Terri Reed  Smith et al → R&S STONE, INC.; 2009-01-07 to 2015-05-28; source msha-controller-operator-history
- **operator_operates_mine:** Salem Stone Corporation → FLOYD QUARRY; 2015-05-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Doug  Dalton → Salem Stone Corporation; 2015-05-29 to current/open; source msha-controller-operator-history