# Relationship history for MSHA mine 0504473

Current hierarchy: **Shauna  Beltramo; Timothy J Beltramo → Tony J Beltramo & Sons Inc → Pegson Crusher**

- 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:** Robert D  Beltramo  et al → Pegson Crusher; 1983-07-01 to 2014-08-28; source msha-controller-operator-history
- **operator_operates_mine:** Tony J Beltramo & Sons Inc → Pegson Crusher; 1991-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert D  Beltramo  et al → Tony J Beltramo & Sons Inc; 1991-12-01 to 2014-08-28; source msha-controller-operator-history
- **controller_controls_operator:** Joseph A  Beltramo  et al → Tony J Beltramo & Sons Inc; 1991-12-01 to 2014-08-28; source msha-controller-operator-history
- **controller_controls_mine:** Robert D Beltramo et al → Pegson Crusher; 2014-08-29 to 2020-01-24; source msha-controller-operator-history
- **controller_controls_operator:** Robert D Beltramo et al → Tony J Beltramo & Sons Inc; 2014-08-29 to 2020-01-24; source msha-controller-operator-history
- **controller_controls_operator:** Timothy J Beltramo et al → Tony J Beltramo & Sons Inc; 2014-08-29 to 2020-01-24; source msha-controller-operator-history
- **controller_controls_mine:** Shauna  Beltramo et al → Pegson Crusher; 2020-01-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shauna  Beltramo et al → Tony J Beltramo & Sons Inc; 2020-01-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy J Beltramo et al → Tony J Beltramo & Sons Inc; 2020-01-25 to current/open; source msha-controller-operator-history