# Relationship history for MSHA mine 2500202

Current hierarchy: **Larry  Paulsen → Paulsen Inc → Kirkpatrick Pit**

- 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:** C Kirkpatrick & Son → Kirkpatrick Pit; 1950-01-01 to 1984-10-31; source msha-controller-operator-history
- **controller_controls_mine:** Wayne  Kirkpatrick → Kirkpatrick Pit; 1950-01-01 to 1984-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Wayne  Kirkpatrick → C Kirkpatrick & Son; 1950-01-01 to 1984-10-31; source msha-controller-operator-history
- **operator_operates_mine:** C Kirkpatrick & Son Sand & Gravel → Kirkpatrick Pit; 1984-11-01 to 1993-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Dennis J  Kirkpatrick → Kirkpatrick Pit; 1984-11-01 to 1993-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Dennis J  Kirkpatrick → C Kirkpatrick & Son Sand & Gravel; 1984-11-01 to 1993-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Larry  Paulsen et al → Kirkpatrick Pit; 1993-01-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Paulsen Inc → Kirkpatrick Pit; 1993-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Paulsen et al → Paulsen Inc; 1993-03-15 to current/open; source msha-controller-operator-history