# Relationship history for MSHA mine 4000737

Current hierarchy: **Franklin Industries Inc → Franklin Limestone Company → #127 Mine And Mill**

- 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:** Crossville Limestone Company Inc → #127 Mine And Mill; 1950-01-01 to 1989-08-07; source msha-controller-operator-history
- **controller_controls_mine:** Richard H  Shirley → #127 Mine And Mill; 1950-01-01 to 1989-08-07; source msha-controller-operator-history
- **controller_controls_operator:** Richard H  Shirley → Crossville Limestone Company Inc; 1950-01-01 to 1989-08-07; source msha-controller-operator-history
- **operator_operates_mine:** Franklin Limestone Company → #127 Mine And Mill; 1989-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Franklin Industries Inc → #127 Mine And Mill; 1989-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Franklin Industries Inc → Franklin Limestone Company; 1989-08-08 to current/open; source msha-controller-operator-history