# Relationship history for MSHA mine 0102723

Current hierarchy: **Maturo John A Jr & Timothy Mc Coy → Imac Energy Inc → Black Creek 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

- **controller_controls_mine:** Maturo John A Jr & Timothy Mc Coy → Black Creek Mine; 1981-12-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Imac Energy Inc → Black Creek Mine; 1987-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Maturo John A Jr & Timothy Mc Coy → Imac Energy Inc; 1987-04-01 to current/open; source msha-controller-operator-history