# Relationship history for MSHA mine 1001299

Current hierarchy: **Moneta Porcupine Mines Inc → Idaho Minerals Inc → MALAD EXPANDER**

- 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:** Oneida Perlite Corp → MALAD EXPANDER; 1950-01-01 to 1986-12-21; source msha-controller-operator-history
- **controller_controls_mine:** Paul H Mills → MALAD EXPANDER; 1950-01-01 to 1986-12-21; source msha-controller-operator-history
- **controller_controls_operator:** Paul H Mills → Oneida Perlite Corp; 1950-01-01 to 1986-12-21; source msha-controller-operator-history
- **operator_operates_mine:** National Perlite Products Company → MALAD EXPANDER; 1986-12-22 to 1996-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Oglebay Norton Company → MALAD EXPANDER; 1986-12-22 to 1996-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Oglebay Norton Company → National Perlite Products Company; 1986-12-22 to 1996-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Idaho Minerals Inc → MALAD EXPANDER; 1997-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Moneta Porcupine Mines Inc → MALAD EXPANDER; 1997-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Moneta Porcupine Mines Inc → Idaho Minerals Inc; 1997-01-01 to current/open; source msha-controller-operator-history