# Relationship history for MSHA mine 1202409

Current hierarchy: **The Heritage Group → US Aggregates LLC → 243 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** The Heritage Group → 243 Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth E  Steiner Jr → 243 Quarry; 1978-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** The Heritage Group → 243 Quarry; 1989-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** S&G Excavating, Inc. → 243 Quarry; 2008-06-17 to 2012-03-29; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth E  Steiner Jr → S&G Excavating, Inc.; 2008-06-17 to 2012-03-29; source msha-controller-operator-history
- **controller_controls_mine:** Greg  Gould → 243 Quarry; 2010-11-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** North American Limestone Corporation → 243 Quarry; 2012-03-30 to 2014-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Gould → North American Limestone Corporation; 2012-03-30 to 2014-06-30; source msha-controller-operator-history
- **operator_operates_mine:** NALC, LLC → 243 Quarry; 2014-07-01 to 2019-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Dana  Boyd et al → 243 Quarry; 2014-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dana  Boyd et al → NALC, LLC; 2014-07-01 to 2019-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Greg  Gould et al → NALC, LLC; 2014-07-01 to 2019-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Heritage Aggregates, LLC → 243 Quarry; 2019-06-01 to 2020-04-20; source msha-controller-operator-history
- **controller_controls_operator:** The Heritage Group → Heritage Aggregates, LLC; 2019-06-01 to 2020-04-20; source msha-controller-operator-history
- **operator_operates_mine:** US Aggregates Inc → 243 Quarry; 2020-04-21 to 2026-06-17; source msha-controller-operator-history
- **controller_controls_operator:** The Heritage Group → US Aggregates Inc; 2020-04-21 to 2026-06-17; source msha-controller-operator-history
- **operator_operates_mine:** US Aggregates LLC → 243 Quarry; 2026-06-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** The Heritage Group → US Aggregates LLC; 2026-06-18 to current/open; source msha-controller-operator-history