# Relationship history for MSHA mine 4703442

Current hierarchy: **Julianne M  Hoople; Keith P.  Hoople → Midwest Perlite Inc. → Midwest Perlite Inc.**

- 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:** Midwest Perlite Inc. → Midwest Perlite Inc.; 2005-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Julianne M  Hoople et al → Midwest Perlite Inc.; 2005-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Julianne M  Hoople et al → Midwest Perlite Inc.; 2005-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith P.  Hoople et al → Midwest Perlite Inc.; 2005-12-13 to current/open; source msha-controller-operator-history