# Relationship history for MSHA mine 4002031

Current hierarchy: **Chapman Jerry → Lloyd Coal Company → Lloyd 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:** Phillips Earl → Lloyd No 1; 1970-01-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Devonia Coal Corp → Lloyd No 1; 1976-03-24 to 1978-04-11; source msha-controller-operator-history
- **controller_controls_operator:** Phillips Earl → Devonia Coal Corp; 1976-03-24 to 1978-04-11; source msha-controller-operator-history
- **operator_operates_mine:** Lloyd Coal Corp → Lloyd No 1; 1978-04-12 to 1981-04-04; source msha-controller-operator-history
- **controller_controls_mine:** Lloyd Lonnie → Lloyd No 1; 1978-04-12 to 1981-04-04; source msha-controller-operator-history
- **controller_controls_operator:** Lloyd Lonnie → Lloyd Coal Corp; 1978-04-12 to 1981-04-04; source msha-controller-operator-history
- **operator_operates_mine:** Devonia Coal Corp → Lloyd No 1; 1981-04-05 to 1983-06-01; source msha-controller-operator-history
- **controller_controls_operator:** Phillips Earl → Devonia Coal Corp; 1981-04-05 to 1983-06-01; source msha-controller-operator-history
- **operator_operates_mine:** Lloyd Coal Corp → Lloyd No 1; 1983-06-02 to 1986-10-23; source msha-controller-operator-history
- **controller_controls_mine:** Phillips Murl → Lloyd No 1; 1983-06-02 to 1986-10-23; source msha-controller-operator-history
- **controller_controls_operator:** Phillips Murl → Lloyd Coal Corp; 1983-06-02 to 1986-10-23; source msha-controller-operator-history
- **controller_controls_mine:** Chapman Jerry → Lloyd No 1; 1986-09-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lloyd Coal Company → Lloyd No 1; 1986-10-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chapman Jerry → Lloyd Coal Company; 1986-10-24 to current/open; source msha-controller-operator-history