# Relationship history for MSHA mine 4406435

Current hierarchy: **Richardson Jerry → P & R Coal Company Inc → No 1**

- 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

- **controller_controls_mine:** Raymond  Cline → No 1; 1987-07-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C & S Mining Corp → No 1; 1987-12-01 to 1988-11-16; source msha-controller-operator-history
- **controller_controls_operator:** Raymond  Cline → C & S Mining Corp; 1987-12-01 to 1988-11-16; source msha-controller-operator-history
- **operator_operates_mine:** P & R Coal Company Inc → No 1; 1988-11-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richardson Jerry Et Al → No 1; 1988-11-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richardson Jerry Et Al → P & R Coal Company Inc; 1988-11-17 to current/open; source msha-controller-operator-history