# Relationship history for MSHA mine 3606375

Current hierarchy: **Costolo Cleland → Cherokee Coal Company → Motycki Strip**

- 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

- **operator_operates_mine:** James Parnell → Motycki Strip; 1977-03-01 to 1985-07-07; source msha-controller-operator-history
- **controller_controls_mine:** Parnell James → Motycki Strip; 1977-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Parnell James → James Parnell; 1977-03-01 to 1985-07-07; source msha-controller-operator-history
- **operator_operates_mine:** Cherokee Coal Company → Motycki Strip; 1985-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Costolo Cleland → Motycki Strip; 1985-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Costolo Cleland → Cherokee Coal Company; 1985-07-08 to current/open; source msha-controller-operator-history