# Relationship history for MSHA mine 4605536

Current hierarchy: **Sears Casey & Emery Smallman → Taner Coal Company Inc → Taner #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:** Sears Casey & Emery Smallman → Taner #1; 1973-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Coats Run Energy Inc → Taner #1; 1977-06-01 to 1983-05-23; source msha-controller-operator-history
- **controller_controls_mine:** Glass L R → Taner #1; 1977-06-01 to 1983-05-23; source msha-controller-operator-history
- **controller_controls_operator:** Glass L R → Coats Run Energy Inc; 1977-06-01 to 1983-05-23; source msha-controller-operator-history
- **operator_operates_mine:** Taner Coal Company Inc → Taner #1; 1983-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sears Casey & Emery Smallman → Taner Coal Company Inc; 1983-05-24 to current/open; source msha-controller-operator-history