# Relationship history for MSHA mine 2103519

Current hierarchy: **Mark  Macey; Kenneth  Macey → Macey Construction Co Inc → Macey 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

- **controller_controls_mine:** Kenneth  Macey et al → Macey Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Macey Construction Co Inc → Macey Pit; 2005-11-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth  Macey et al → Macey Construction Co Inc; 2005-11-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Macey et al → Macey Construction Co Inc; 2005-11-22 to current/open; source msha-controller-operator-history