# Relationship history for MSHA mine 4607010

Current hierarchy: **M A J V & Primrose Coal Company → Thistle Coal Company → Thistle Coal Co #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:** B & B Industries Inc → Thistle Coal Co #1 Mine; 1985-10-01 to 1986-10-07; source msha-controller-operator-history
- **controller_controls_mine:** Vance James R → Thistle Coal Co #1 Mine; 1985-10-01 to 1986-10-07; source msha-controller-operator-history
- **controller_controls_operator:** Vance James R → B & B Industries Inc; 1985-10-01 to 1986-10-07; source msha-controller-operator-history
- **operator_operates_mine:** Thistle Coal Company → Thistle Coal Co #1 Mine; 1986-10-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** M A J V & Primrose Coal Company → Thistle Coal Co #1 Mine; 1986-10-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** M A J V & Primrose Coal Company → Thistle Coal Company; 1986-10-08 to current/open; source msha-controller-operator-history