# Relationship history for MSHA mine 4403702

Current hierarchy: **Sonny J  Smith → Triple S Coal Company Inc → No 4**

- 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:** P W & W Coal Company Inc → No 4; 1974-01-01 to 1977-05-11; source msha-controller-operator-history
- **controller_controls_mine:** Whited Clarence → No 4; 1974-01-01 to 1978-02-09; source msha-controller-operator-history
- **controller_controls_operator:** Whited Clarence → P W & W Coal Company Inc; 1974-01-01 to 1977-05-11; source msha-controller-operator-history
- **controller_controls_mine:** Sonny J  Smith → No 4; 1975-06-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Elswick Kermit → No 4; 1976-11-01 to 1978-03-14; source msha-controller-operator-history
- **operator_operates_mine:** Little Mike Coal Corp → No 4; 1977-05-12 to 1978-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Elswick Kermit → Little Mike Coal Corp; 1977-05-12 to 1978-03-14; source msha-controller-operator-history
- **operator_operates_mine:** Triple S Coal Company Inc → No 4; 1978-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sonny J  Smith → Triple S Coal Company Inc; 1978-03-15 to current/open; source msha-controller-operator-history