# Relationship history for MSHA mine 3608273

Current hierarchy: **Mark  Popple; David  Popple → Pioneer Aggregates Inc → Clinton Surface Mine**

- 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:** John  Popple → Clinton Surface Mine; 1981-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** John Popple Trucking → Clinton Surface Mine; 1991-11-01 to 1995-12-21; source msha-controller-operator-history
- **controller_controls_operator:** John  Popple → John Popple Trucking; 1991-11-01 to 1995-12-21; source msha-controller-operator-history
- **operator_operates_mine:** Pioneer Aggregates Inc → Clinton Surface Mine; 1995-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mark  Popple et al → Clinton Surface Mine; 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 current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Popple et al → Pioneer Aggregates Inc; 1995-12-22 to current/open; source msha-controller-operator-history