# Relationship history for MSHA mine 4100019

Current hierarchy: **Meridian Aggregates Company LP → Meridian Aggregates Company → PALESTINE**

- 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

- **controller_controls_mine:** Lafarge S A → PALESTINE; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** East Texas Stone Company → PALESTINE; 1950-01-01 to 1986-08-28; source msha-controller-operator-history
- **controller_controls_mine:** R E Hable Company → PALESTINE; 1950-01-01 to 1986-08-28; source msha-controller-operator-history
- **controller_controls_operator:** R E Hable Company → East Texas Stone Company; 1950-01-01 to 1986-08-28; source msha-controller-operator-history
- **operator_operates_mine:** Lafarge Corp → PALESTINE; 1986-08-29 to 1996-07-02; source msha-controller-operator-history
- **controller_controls_operator:** Lafarge S A → Lafarge Corp; 1986-08-29 to 1996-07-02; source msha-controller-operator-history
- **controller_controls_mine:** Meridian Aggregates Company LP → PALESTINE; 1991-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Meridian Aggregates Company → PALESTINE; 1996-07-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Meridian Aggregates Company LP → Meridian Aggregates Company; 1996-07-03 to current/open; source msha-controller-operator-history