# Relationship history for MSHA mine 1201987

Current hierarchy: **The Heritage Group → U S Aggregates Inc → U S Aggregates Incorporated**

- 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:** The Heritage Group → U S Aggregates Incorporated; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** J A Haynes Gravel Inc → U S Aggregates Incorporated; 1986-09-01 to 1990-04-23; source msha-controller-operator-history
- **controller_controls_mine:** James A  Haynes → U S Aggregates Incorporated; 1986-09-01 to 1990-04-23; source msha-controller-operator-history
- **controller_controls_operator:** James A  Haynes → J A Haynes Gravel Inc; 1986-09-01 to 1990-04-23; source msha-controller-operator-history
- **operator_operates_mine:** Contractors Aggregate Supply Inc → U S Aggregates Incorporated; 1990-04-24 to 1993-12-26; source msha-controller-operator-history
- **controller_controls_mine:** Stan  Lough → U S Aggregates Incorporated; 1990-04-24 to 1993-12-26; source msha-controller-operator-history
- **controller_controls_operator:** Stan  Lough → Contractors Aggregate Supply Inc; 1990-04-24 to 1993-12-26; source msha-controller-operator-history
- **operator_operates_mine:** U S Aggregates Inc → U S Aggregates Incorporated; 1993-12-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** The Heritage Group → U S Aggregates Inc; 1993-12-27 to current/open; source msha-controller-operator-history