# Relationship history for MSHA mine 4402290

Current hierarchy: **Huffman Bobby & Cecil Brant → Brant & Huffman Coal Company → No 1 Mine**

- 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

- **operator_operates_mine:** Garcel Ratliff Coal Company → No 1 Mine; 1950-01-01 to 1973-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Ratliff Garcel → No 1 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ratliff Garcel → Garcel Ratliff Coal Company; 1950-01-01 to 1973-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Ratliff Brothers Coal Company Inc → No 1 Mine; 1973-06-01 to 1975-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Ratliff Ira-Bill Et Al → No 1 Mine; 1973-06-01 to 1983-02-21; source msha-controller-operator-history
- **controller_controls_operator:** Ratliff Ira-Bill Et Al → Ratliff Brothers Coal Company Inc; 1973-06-01 to 1975-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Scotsdale Coal Corp → No 1 Mine; 1975-09-01 to 1976-08-05; source msha-controller-operator-history
- **controller_controls_mine:** Sawyers Billy Et Al → No 1 Mine; 1975-09-01 to 1976-08-05; source msha-controller-operator-history
- **controller_controls_operator:** Sawyers Billy Et Al → Scotsdale Coal Corp; 1975-09-01 to 1976-08-05; source msha-controller-operator-history
- **operator_operates_mine:** Brant & Huffman Coal Company → No 1 Mine; 1976-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Huffman Bobby & Cecil Brant → No 1 Mine; 1976-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Huffman Bobby & Cecil Brant → Brant & Huffman Coal Company; 1976-08-06 to current/open; source msha-controller-operator-history