# Relationship history for MSHA mine 0404973

Current hierarchy: **A Scott  Dockter; Joel K  Lucich → Ione Rock LP → Ione Rock**

- 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:** North Carbondale Minerals Inc → Ione Rock; 1988-09-01 to 2004-01-15; source msha-controller-operator-history
- **controller_controls_mine:** North Carbondale Minerals Inc → Ione Rock; 1988-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** North Carbondale Minerals Inc → North Carbondale Minerals Inc; 1988-09-01 to 2004-01-15; source msha-controller-operator-history
- **operator_operates_mine:** ASD Corp → Ione Rock; 2004-01-16 to 2005-03-28; source msha-controller-operator-history
- **controller_controls_mine:** A Scott  Dockter → Ione Rock; 2004-01-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** A Scott  Dockter → ASD Corp; 2004-01-16 to 2005-03-28; source msha-controller-operator-history
- **operator_operates_mine:** Ione Rock LP → Ione Rock; 2005-03-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** A Scott  Dockter et al → Ione Rock; 2005-03-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** A Scott  Dockter et al → Ione Rock LP; 2005-03-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joel K  Lucich et al → Ione Rock LP; 2005-03-29 to current/open; source msha-controller-operator-history