# Relationship history for MSHA mine 0101525

Current hierarchy: **Barticlide Ltd → Pawnee Mining & Coal Sales Inc → Pawnee Cleaning & Prep Plant**

- 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:** Hawkins Lamar → Pawnee Cleaning & Prep Plant; 1973-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pawnee Mining & Coal Sales Inc → Pawnee Cleaning & Prep Plant; 1976-04-01 to 1977-03-22; source msha-controller-operator-history
- **controller_controls_operator:** Hawkins Lamar → Pawnee Mining & Coal Sales Inc; 1976-04-01 to 1977-03-22; source msha-controller-operator-history
- **operator_operates_mine:** Pawnee Mining & Coal Sales Inc → Pawnee Cleaning & Prep Plant; 1977-03-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Barticlide Ltd → Pawnee Cleaning & Prep Plant; 1977-03-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barticlide Ltd → Pawnee Mining & Coal Sales Inc; 1977-03-23 to current/open; source msha-controller-operator-history