# Relationship history for MSHA mine 3608852

Current hierarchy: **Matthew G  Markunas → Meckley's Limestone Products, Inc. → Northeast Materials**

- 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:** Lonzetta Trucking and Excavating Company → Northeast Materials; 2000-02-01 to 2004-10-24; source msha-controller-operator-history
- **controller_controls_mine:** Diane  Lonzetta → Northeast Materials; 2000-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Diane  Lonzetta → Lonzetta Trucking and Excavating Company; 2000-02-01 to 2004-10-24; source msha-controller-operator-history
- **controller_controls_mine:** Matthew G  Markunas et al → Northeast Materials; 2001-01-30 to 2023-10-25; source msha-controller-operator-history
- **operator_operates_mine:** Meckley's Limestone Products, Inc. → Northeast Materials; 2004-10-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matthew G  Markunas et al → Meckley's Limestone Products, Inc.; 2004-10-25 to 2023-10-25; source msha-controller-operator-history
- **controller_controls_operator:** Anthony B  Markunas III et al → Meckley's Limestone Products, Inc.; 2004-10-25 to 2023-10-25; source msha-controller-operator-history
- **controller_controls_mine:** Matthew G  Markunas → Northeast Materials; 2023-10-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matthew G  Markunas → Meckley's Limestone Products, Inc.; 2023-10-26 to current/open; source msha-controller-operator-history