# Relationship history for MSHA mine 3607079

Current hierarchy: **New Enterprise Stone & Lime Company Inc → NEW ENTERPRISE STONE & LIME CO., INC. → LAFLIN QUARRY**

- 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:** New Enterprise Stone & Lime Company Inc → LAFLIN QUARRY; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** John Popple Trucking → LAFLIN QUARRY; 1981-01-01 to 1995-12-21; source msha-controller-operator-history
- **controller_controls_mine:** John  Popple → LAFLIN QUARRY; 1981-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John  Popple → John Popple Trucking; 1981-01-01 to 1995-12-21; source msha-controller-operator-history
- **operator_operates_mine:** Pioneer Aggregates Inc → LAFLIN QUARRY; 1995-12-22 to 2018-05-03; source msha-controller-operator-history
- **controller_controls_mine:** Mark  Popple et al → LAFLIN QUARRY; 1995-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark  Popple et al → Pioneer Aggregates Inc; 1995-12-22 to 2018-05-03; source msha-controller-operator-history
- **controller_controls_operator:** David  Popple et al → Pioneer Aggregates Inc; 1995-12-22 to 2018-05-03; source msha-controller-operator-history
- **operator_operates_mine:** New Enterprise Stone & Lime Co., Inc. → LAFLIN QUARRY; 2018-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** New Enterprise Stone & Lime Company Inc → New Enterprise Stone & Lime Co., Inc.; 2018-05-04 to current/open; source msha-controller-operator-history