# Relationship history for MSHA mine 3002902

Current hierarchy: **Stephen A Pomaro; Mike A Pomaro → Pomaro Industries Inc → POMARO INDUSTRIES INC**

- 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:** S P Materials Inc → POMARO INDUSTRIES INC; 1989-08-01 to 1999-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Stephen D  Pomaro → POMARO INDUSTRIES INC; 1989-08-01 to 1999-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Stephen D  Pomaro → S P Materials Inc; 1989-08-01 to 1999-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Pomaro Industries Inc → POMARO INDUSTRIES INC; 2000-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stephen A Pomaro et al → POMARO INDUSTRIES INC; 2000-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephen A Pomaro et al → Pomaro Industries Inc; 2000-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike A Pomaro et al → Pomaro Industries Inc; 2000-01-01 to current/open; source msha-controller-operator-history