# Relationship history for MSHA mine 1515845

Current hierarchy: **Lawson Steven Adam Trust--Tyler George Lawson Trus → P & P Inc Of Kentucky → P20**

- 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:** Bizzack John → P20; 1974-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bizwil Inc → P20; 1986-11-01 to 1995-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Bizzack John → Bizwil Inc; 1986-11-01 to 1995-07-31; source msha-controller-operator-history
- **operator_operates_mine:** P & P Inc Of Kentucky → P20; 1995-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lawson Steven Adam Trust--Tyler George Lawson Trus → P20; 1995-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lawson Steven Adam Trust--Tyler George Lawson Trus → P & P Inc Of Kentucky; 1995-08-01 to current/open; source msha-controller-operator-history