# Relationship history for MSHA mine 1600354

Current hierarchy: **Arthur Metals LLC → LAlumina LLC → LAlumina 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Ormet Corp → LAlumina LLC; 1950-01-01 to 1986-09-11; source msha-controller-operator-history
- **controller_controls_mine:** Consolidated Aluminum et al → LAlumina LLC; 1950-01-01 to 1986-09-11; source msha-controller-operator-history
- **controller_controls_operator:** Consolidated Aluminum et al → Ormet Corp; 1950-01-01 to 1986-09-11; source msha-controller-operator-history
- **operator_operates_mine:** Ormet Primary Aluminum Corp/Burnside Div → LAlumina LLC; 1986-09-12 to 2013-12-11; source msha-controller-operator-history
- **controller_controls_mine:** Ormet Corporation → LAlumina LLC; 1986-09-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ormet Corporation → Ormet Primary Aluminum Corp/Burnside Div; 1986-09-12 to 2013-12-11; source msha-controller-operator-history
- **operator_operates_mine:** LAlumina LLC → LAlumina LLC; 2013-12-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Almatis Holdings 1 BV → LAlumina LLC; 2013-12-12 to 2015-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Almatis Holdings 1 BV → LAlumina LLC; 2013-12-12 to 2015-08-31; source msha-controller-operator-history
- **controller_controls_mine:** OYAK Group → LAlumina LLC; 2015-09-01 to 2019-06-25; source msha-controller-operator-history
- **controller_controls_operator:** OYAK Group → LAlumina LLC; 2015-09-01 to 2019-06-25; source msha-controller-operator-history
- **controller_controls_mine:** Arthur Metals LLC → LAlumina LLC; 2019-06-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arthur Metals LLC → LAlumina LLC; 2019-06-26 to current/open; source msha-controller-operator-history