# Relationship history for MSHA mine 0100011

Current hierarchy: **Imerys S A → IMERYS CARBONATES USA, INC. → IMERYS SYLACAUGA OPERATIONS**

- 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:** Georgia Marble Company → IMERYS SYLACAUGA OPERATIONS; 1950-01-01 to 1989-05-30; source msha-controller-operator-history
- **controller_controls_mine:** Jim Walter Corp → IMERYS SYLACAUGA OPERATIONS; 1950-01-01 to 1989-05-30; source msha-controller-operator-history
- **controller_controls_operator:** Jim Walter Corp → Georgia Marble Company; 1950-01-01 to 1989-05-30; source msha-controller-operator-history
- **operator_operates_mine:** Imerys Pigments LLC → IMERYS SYLACAUGA OPERATIONS; 1989-05-31 to 2008-02-11; source msha-controller-operator-history
- **controller_controls_mine:** Imerys S A → IMERYS SYLACAUGA OPERATIONS; 1989-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Imerys S A → Imerys Pigments LLC; 1989-05-31 to 2008-02-11; source msha-controller-operator-history
- **operator_operates_mine:** Imerys Carbonates LLC → IMERYS SYLACAUGA OPERATIONS; 2008-02-12 to 2016-02-04; source msha-controller-operator-history
- **controller_controls_mine:** Imerys S A → IMERYS SYLACAUGA OPERATIONS; 2008-02-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Imerys S A → Imerys Carbonates LLC; 2008-02-12 to 2016-02-04; source msha-controller-operator-history
- **operator_operates_mine:** Imerys Carbonates USA, Inc. → IMERYS SYLACAUGA OPERATIONS; 2016-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Imerys S A → Imerys Carbonates USA, Inc.; 2016-02-05 to current/open; source msha-controller-operator-history