# Relationship history for MSHA mine 4002218

Current hierarchy: **Phillips Billy A → Williams Coal Corp → Lloyd No 3**

- 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:** E & V Coal Corp → Lloyd No 3; 1977-04-01 to 1978-10-19; source msha-controller-operator-history
- **controller_controls_mine:** Phillips Earl → Lloyd No 3; 1977-04-01 to 1978-10-19; source msha-controller-operator-history
- **controller_controls_operator:** Phillips Earl → E & V Coal Corp; 1977-04-01 to 1978-10-19; source msha-controller-operator-history
- **controller_controls_mine:** Williams James → Lloyd No 3; 1978-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Williams Coal Corp → Lloyd No 3; 1978-10-20 to 1981-06-15; source msha-controller-operator-history
- **controller_controls_operator:** Williams James → Williams Coal Corp; 1978-10-20 to 1981-06-15; source msha-controller-operator-history
- **operator_operates_mine:** Williams Coal Corp → Lloyd No 3; 1981-06-16 to 1981-09-06; source msha-controller-operator-history
- **controller_controls_mine:** Lloyd Lonnie → Lloyd No 3; 1981-06-16 to 1981-09-06; source msha-controller-operator-history
- **controller_controls_operator:** Lloyd Lonnie → Williams Coal Corp; 1981-06-16 to 1981-09-06; source msha-controller-operator-history
- **operator_operates_mine:** Williams Coal Corp → Lloyd No 3; 1981-09-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Phillips Billy A → Lloyd No 3; 1981-09-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Phillips Billy A → Williams Coal Corp; 1981-09-07 to current/open; source msha-controller-operator-history