# Relationship history for MSHA mine 1511689

Current hierarchy: **Lawson Arthur → Shawn Mike Coal Company Inc → No 2**

- 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:** Cornett Hiram → No 2; 1975-01-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Childers James H → No 2; 1976-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cornett Coal Company → No 2; 1978-09-01 to 1982-08-18; source msha-controller-operator-history
- **controller_controls_operator:** Cornett Hiram → Cornett Coal Company; 1978-09-01 to 1982-08-18; source msha-controller-operator-history
- **operator_operates_mine:** Bentcil Coal Company → No 2; 1982-08-19 to 1983-08-14; source msha-controller-operator-history
- **controller_controls_mine:** Thompson Clarence E → No 2; 1982-08-19 to 1983-08-14; source msha-controller-operator-history
- **controller_controls_operator:** Thompson Clarence E → Bentcil Coal Company; 1982-08-19 to 1983-08-14; source msha-controller-operator-history
- **operator_operates_mine:** Kerri-Dawn Coal Company Inc → No 2; 1983-08-15 to 1984-01-02; source msha-controller-operator-history
- **controller_controls_mine:** Kennie Ray  Childers → No 2; 1983-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kennie Ray  Childers → Kerri-Dawn Coal Company Inc; 1983-08-15 to 1984-01-02; source msha-controller-operator-history
- **controller_controls_mine:** Lawson Arthur Et Al → No 2; 1983-08-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cheryl Sue Coal Company Inc → No 2; 1984-01-03 to 1984-10-17; source msha-controller-operator-history
- **controller_controls_mine:** Mc Kee Selba E → No 2; 1984-01-03 to 1984-10-17; source msha-controller-operator-history
- **controller_controls_operator:** Mc Kee Selba E → Cheryl Sue Coal Company Inc; 1984-01-03 to 1984-10-17; source msha-controller-operator-history
- **operator_operates_mine:** Blue Mountain Mining Corp → No 2; 1984-10-18 to 1985-01-22; source msha-controller-operator-history
- **controller_controls_operator:** Childers James H → Blue Mountain Mining Corp; 1984-10-18 to 1985-01-22; source msha-controller-operator-history
- **operator_operates_mine:** Shawn Mike Coal Company Inc → No 2; 1985-01-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lawson Arthur Et Al → Shawn Mike Coal Company Inc; 1985-01-23 to current/open; source msha-controller-operator-history