# Relationship history for MSHA mine 4002704

Current hierarchy: **Sanders Larry H → S & W Coal Company Inc → No 33**

- 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:** Meeks Franklin Dee → No 33; 1974-08-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Marion Coal Company Inc → No 33; 1981-02-01 to 1990-07-29; source msha-controller-operator-history
- **controller_controls_operator:** Meeks Franklin Dee → Marion Coal Company Inc; 1981-02-01 to 1990-07-29; source msha-controller-operator-history
- **operator_operates_mine:** S & W Coal Company Inc → No 33; 1990-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sanders Larry H → No 33; 1990-07-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sanders Larry H → S & W Coal Company Inc; 1990-07-30 to current/open; source msha-controller-operator-history