# Relationship history for MSHA mine 4607318

Current hierarchy: **QMAG Investors LP → Quality Magnetite LLC → Quality Magnetite LLC**

- 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:** Akers Magnetite Inc → Quality Magnetite LLC; 1987-07-01 to 2008-06-23; source msha-controller-operator-history
- **controller_controls_mine:** Randall  Akers  et al → Quality Magnetite LLC; 1987-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randall  Akers  et al → Akers Magnetite Inc; 1987-07-01 to 2008-06-23; source msha-controller-operator-history
- **controller_controls_operator:** Daniel  Akers  et al → Akers Magnetite Inc; 1987-07-01 to 2008-06-23; source msha-controller-operator-history
- **controller_controls_mine:** Quintana Capital Group GP Ltd et al → Quality Magnetite LLC; 2008-06-19 to 2015-03-15; source msha-controller-operator-history
- **operator_operates_mine:** Quality Magnetite LLC → Quality Magnetite LLC; 2008-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Quintana Capital Group GP Ltd et al → Quality Magnetite LLC; 2008-06-24 to 2015-03-15; source msha-controller-operator-history
- **controller_controls_mine:** QMAG Investors LP → Quality Magnetite LLC; 2015-03-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** QMAG Investors LP → Quality Magnetite LLC; 2015-03-16 to current/open; source msha-controller-operator-history