# Relationship history for MSHA mine 0301399

Current hierarchy: **Kenny L  Staggs → Rocky Point Materials → Rocky Point Materials**

- 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:** Freshour Construction Company Inc → Rocky Point Materials; 1950-01-01 to 1989-06-12; source msha-controller-operator-history
- **controller_controls_mine:** Jack  Freshour → Rocky Point Materials; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jack  Freshour → Freshour Construction Company Inc; 1950-01-01 to 1989-06-12; source msha-controller-operator-history
- **controller_controls_mine:** Tommy  Gipson → Rocky Point Materials; 1987-01-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tommy Gipson Construction Company → Rocky Point Materials; 1989-06-13 to 2005-03-20; source msha-controller-operator-history
- **controller_controls_operator:** Tommy  Gipson → Tommy Gipson Construction Company; 1989-06-13 to 2005-03-20; source msha-controller-operator-history
- **operator_operates_mine:** Rocky Point Materials → Rocky Point Materials; 2005-03-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenny L  Staggs → Rocky Point Materials; 2005-03-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenny L  Staggs → Rocky Point Materials; 2005-03-21 to current/open; source msha-controller-operator-history