# Relationship history for MSHA mine 4609116

Current hierarchy: **Robert R  Jeran → Roblee Coal Company → Mine 108-I Pitt**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Robert R  Jeran → Mine 108-I Pitt; 1983-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John T  Markovich → Mine 108-I Pitt; 1985-10-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** M & J Coal Company Inc → Mine 108-I Pitt; 2005-08-19 to 2006-10-24; source msha-controller-operator-history
- **controller_controls_operator:** John T  Markovich → M & J Coal Company Inc; 2005-08-19 to 2006-10-24; source msha-controller-operator-history
- **operator_operates_mine:** Roblee Coal Company → Mine 108-I Pitt; 2006-10-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert R  Jeran → Roblee Coal Company; 2006-10-25 to current/open; source msha-controller-operator-history