# Relationship history for MSHA mine 4001038

Current hierarchy: **Industrial Minerals Group LLC → Kopper Glo Mining, LLC → Kopper Glo Preparation Plant**

- 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

- **operator_operates_mine:** Kopper Glo Fuel Inc → Kopper Glo Preparation Plant; 1950-01-01 to 2017-05-17; source msha-controller-operator-history
- **controller_controls_mine:** Robert E  Haden et al → Kopper Glo Preparation Plant; 1950-01-01 to 2007-07-26; source msha-controller-operator-history
- **controller_controls_operator:** Robert E  Haden et al → Kopper Glo Fuel Inc; 1950-01-01 to 2007-07-26; source msha-controller-operator-history
- **controller_controls_mine:** Keith D  Dyke → Kopper Glo Preparation Plant; 2007-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith D  Dyke → Kopper Glo Fuel Inc; 2007-07-27 to 2017-05-17; source msha-controller-operator-history
- **controller_controls_mine:** Quintana Capital Group GP Ltd et al → Kopper Glo Preparation Plant; 2009-06-02 to 2018-12-30; source msha-controller-operator-history
- **operator_operates_mine:** Kopper Glo Mining, LLC → Kopper Glo Preparation Plant; 2017-05-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Quintana Capital Group GP Ltd et al → Kopper Glo Mining, LLC; 2017-05-18 to 2018-12-30; source msha-controller-operator-history
- **controller_controls_mine:** Industrial Minerals Group LLC → Kopper Glo Preparation Plant; 2018-12-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Industrial Minerals Group LLC → Kopper Glo Mining, LLC; 2018-12-31 to current/open; source msha-controller-operator-history