# Relationship history for MSHA mine 1510152

Current hierarchy: **Jones Ronnie W → R W Coal Company Inc → 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:** Cain William Ronald → Tipple; 1976-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kentucky Carolina Coal Company → Tipple; 1977-02-01 to 1986-07-13; source msha-controller-operator-history
- **controller_controls_operator:** Cain William Ronald → Kentucky Carolina Coal Company; 1977-02-01 to 1986-07-13; source msha-controller-operator-history
- **operator_operates_mine:** R W Coal Company Inc → Tipple; 1986-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jones Ronnie W → Tipple; 1986-07-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jones Ronnie W → R W Coal Company Inc; 1986-07-14 to current/open; source msha-controller-operator-history