# Relationship history for MSHA mine 4300384

Current hierarchy: **John F  Heffernan; Peter A  Heffernan → HEFFERNAN BROTHERS AGGREGATE → HEFFERNAN BROTHERS AGGREGATE**

- 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:** Pine Tree Gravel → HEFFERNAN BROTHERS AGGREGATE; 1985-03-01 to 2013-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Francis A  Heffernan et al → HEFFERNAN BROTHERS AGGREGATE; 1985-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Francis A  Heffernan et al → Pine Tree Gravel; 1985-03-01 to 2013-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Diane  Heffernan et al → Pine Tree Gravel; 1985-03-01 to 2013-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Heffernan Brothers Aggregate → HEFFERNAN BROTHERS AGGREGATE; 2014-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peter A  Heffernan et al → HEFFERNAN BROTHERS AGGREGATE; 2014-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peter A  Heffernan et al → Heffernan Brothers Aggregate; 2014-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John F  Heffernan et al → Heffernan Brothers Aggregate; 2014-01-01 to current/open; source msha-controller-operator-history