# Relationship history for MSHA mine 1514065

Current hierarchy: **Diamond Basil → Chukker Coal Company Inc → Michael Shane Tipple**

- 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 → Michael Shane Tipple; 1974-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Bizwil Inc → Michael Shane Tipple; 1983-05-01 to 1990-05-03; source msha-controller-operator-history
- **controller_controls_operator:** Bizzack John → Bizwil Inc; 1983-05-01 to 1990-05-03; source msha-controller-operator-history
- **controller_controls_mine:** Andrew J  Leckie → Michael Shane Tipple; 1985-09-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Revelstone Coal Company Inc → Michael Shane Tipple; 1990-05-04 to 1991-11-14; source msha-controller-operator-history
- **controller_controls_operator:** Andrew J  Leckie → Revelstone Coal Company Inc; 1990-05-04 to 1991-11-14; source msha-controller-operator-history
- **operator_operates_mine:** Chukker Coal Company Inc → Michael Shane Tipple; 1991-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Diamond Basil → Michael Shane Tipple; 1991-11-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Diamond Basil → Chukker Coal Company Inc; 1991-11-15 to current/open; source msha-controller-operator-history