# Relationship history for MSHA mine 3600017

Current hierarchy: **Carmeuse Holding SA → Carmeuse Lime Inc → Carmeuse Lime Inc**

- 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:** Bethlehem Mines Corp → Carmeuse Lime Inc; 1950-01-01 to 1988-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Bethlehem Steel Corp → Carmeuse Lime Inc; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bethlehem Steel Corp → Bethlehem Mines Corp; 1950-01-01 to 1988-01-31; source msha-controller-operator-history
- **controller_controls_mine:** Tarmac Plc → Carmeuse Lime Inc; 1984-12-28 to 2000-10-02; source msha-controller-operator-history
- **operator_operates_mine:** Broyhill & Associates Inc → Carmeuse Lime Inc; 1988-02-01 to 1990-04-08; source msha-controller-operator-history
- **controller_controls_mine:** Broyhill & Associates Inc → Carmeuse Lime Inc; 1988-02-01 to 1990-04-08; source msha-controller-operator-history
- **controller_controls_operator:** Broyhill & Associates Inc → Broyhill & Associates Inc; 1988-02-01 to 1990-04-08; source msha-controller-operator-history
- **controller_controls_mine:** George Wimpey Plc → Carmeuse Lime Inc; 1989-11-02 to 1996-03-26; source msha-controller-operator-history
- **operator_operates_mine:** Wimpey Minerals Usa Inc → Carmeuse Lime Inc; 1990-04-09 to 1996-03-26; source msha-controller-operator-history
- **controller_controls_operator:** George Wimpey Plc → Wimpey Minerals Usa Inc; 1990-04-09 to 1996-03-26; source msha-controller-operator-history
- **operator_operates_mine:** Tarmac America Inc → Carmeuse Lime Inc; 1996-03-27 to 1996-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Tarmac Plc → Tarmac America Inc; 1996-03-27 to 1996-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Carmeuse Lime Inc → Carmeuse Lime Inc; 1997-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Carmeuse Holding SA → Carmeuse Lime Inc; 1997-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carmeuse Holding SA → Carmeuse Lime Inc; 1997-01-01 to current/open; source msha-controller-operator-history