# Relationship history for MSHA mine 4000301

Current hierarchy: **Miracle Rufus → Miracle 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Old Anthers Coal Company → No 1 Mine; 1950-01-01 to 1975-09-08; source msha-controller-operator-history
- **controller_controls_mine:** Old Anthers Coal Company → No 1 Mine; 1950-01-01 to 1975-09-08; source msha-controller-operator-history
- **controller_controls_operator:** Old Anthers Coal Company → Old Anthers Coal Company; 1950-01-01 to 1975-09-08; source msha-controller-operator-history
- **controller_controls_mine:** Byrd Floyd--Dannel & H B Reece → No 1 Mine; 1974-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** B & R Coal Company → No 1 Mine; 1975-09-09 to 1976-09-06; source msha-controller-operator-history
- **controller_controls_operator:** Byrd Floyd--Dannel & H B Reece → B & R Coal Company; 1975-09-09 to 1976-09-06; source msha-controller-operator-history
- **operator_operates_mine:** Miracle Coal Company → No 1 Mine; 1976-09-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Miracle Rufus → No 1 Mine; 1976-09-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Miracle Rufus → Miracle Coal Company; 1976-09-07 to current/open; source msha-controller-operator-history