# Relationship history for MSHA mine 0800546

Current hierarchy: **Consolidated Gold Fields Limited → Mule Pen Quarry Corp → Mule Pen Quarry Corporation**

- 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:** Meekins Inc → Mule Pen Quarry Corporation; 1950-01-01 to 1982-08-10; source msha-controller-operator-history
- **controller_controls_mine:** Kearns Thomas N → Mule Pen Quarry Corporation; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kearns Thomas N → Meekins Inc; 1950-01-01 to 1982-08-10; source msha-controller-operator-history
- **operator_operates_mine:** Mule Pen Quarry Corp → Mule Pen Quarry Corporation; 1982-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Consolidated Gold Fields Limited → Mule Pen Quarry Corporation; 1982-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Consolidated Gold Fields Limited → Mule Pen Quarry Corp; 1982-08-11 to current/open; source msha-controller-operator-history