# Relationship history for MSHA mine 1509740

Current hierarchy: **Carmeuse Holding SA → Carmeuse Lime & Stone Inc → Maysville Kiln Plant**

- 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:** Dravo Lime Company → Maysville Kiln Plant; 1950-01-01 to 1998-10-25; source msha-controller-operator-history
- **controller_controls_mine:** Dravo Corp → Maysville Kiln Plant; 1950-01-01 to 1998-11-24; source msha-controller-operator-history
- **controller_controls_operator:** Dravo Corp → Dravo Lime Company; 1950-01-01 to 1998-10-25; source msha-controller-operator-history
- **controller_controls_mine:** Carmeuse Holding SA → Maysville Kiln Plant; 1997-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** DRAVO LIME CO → Maysville Kiln Plant; 1998-10-26 to 2002-06-19; source msha-controller-operator-history
- **controller_controls_mine:** Lafarge SA → Maysville Kiln Plant; 1998-10-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lafarge SA → DRAVO LIME CO; 1998-10-26 to 2002-06-19; source msha-controller-operator-history
- **controller_controls_operator:** Carmeuse Holding SA → DRAVO LIME CO; 1998-10-26 to 2002-06-19; source msha-controller-operator-history
- **operator_operates_mine:** CARMEUSE LIME, INC. → Maysville Kiln Plant; 2002-06-20 to 2003-03-16; source msha-controller-operator-history
- **controller_controls_operator:** Carmeuse Holding SA → CARMEUSE LIME, INC.; 2002-06-20 to 2003-03-16; source msha-controller-operator-history
- **controller_controls_mine:** Lafarge SA → Maysville Kiln Plant; 2002-06-20 to 2015-07-14; source msha-controller-operator-history
- **operator_operates_mine:** Carmeuse Lime & Stone Inc → Maysville Kiln Plant; 2003-03-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lafarge SA → Carmeuse Lime & Stone Inc; 2003-03-17 to 2015-07-14; source msha-controller-operator-history
- **controller_controls_operator:** Carmeuse Holding SA → Carmeuse Lime & Stone Inc; 2003-03-17 to 2015-07-14; source msha-controller-operator-history
- **controller_controls_mine:** Carmeuse Holding SA → Maysville Kiln Plant; 2015-07-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carmeuse Holding SA → Carmeuse Lime & Stone Inc; 2015-07-15 to current/open; source msha-controller-operator-history