# Relationship history for MSHA mine 1517092

Current hierarchy: **Eddie  Holbrooks → Husky Coal Company Inc → No 5**

- 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:** Eddie  Holbrooks → No 5; 1989-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pentagram Mining Company → No 5; 1991-07-01 to 1994-05-15; source msha-controller-operator-history
- **controller_controls_mine:** (Donald) Todd  Kiscaden et al → No 5; 1991-07-01 to 1996-03-08; source msha-controller-operator-history
- **controller_controls_operator:** (Donald) Todd  Kiscaden et al → Pentagram Mining Company; 1991-07-01 to 1994-05-15; source msha-controller-operator-history
- **operator_operates_mine:** Husky Coal Company Inc → No 5; 1994-05-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eddie  Holbrooks → Husky Coal Company Inc; 1994-05-16 to current/open; source msha-controller-operator-history