# Relationship history for MSHA mine 0504011

Current hierarchy: **Stephen  Baghdadi → CRG Mining LLC → Gold Links**

- 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:** Quasar Mine Services Corp (Usa) → Gold Links; 1983-08-31 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Quasar Mine Services Corp (Usa) → Gold Links; 1985-03-01 to 1987-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Quasar Mine Services Corp (Usa) → Quasar Mine Services Corp (Usa); 1985-03-01 to 1987-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Melvin R Gydesen → Gold Links; 1987-08-01 to 2014-01-25; source msha-controller-operator-history
- **controller_controls_mine:** Melvin R  Gydesen  et al → Gold Links; 1987-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Melvin R  Gydesen  et al → Melvin R Gydesen; 1987-08-01 to 2014-01-25; source msha-controller-operator-history
- **operator_operates_mine:** Aspen Industrial Inc → Gold Links; 2014-01-26 to 2016-11-27; source msha-controller-operator-history
- **controller_controls_mine:** Robert G  Gydesen et al → Gold Links; 2014-01-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert G  Gydesen et al → Aspen Industrial Inc; 2014-01-26 to 2016-11-27; source msha-controller-operator-history
- **operator_operates_mine:** CRG Mining LLC → Gold Links; 2016-11-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stephen  Baghdadi → Gold Links; 2016-11-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephen  Baghdadi → CRG Mining LLC; 2016-11-28 to current/open; source msha-controller-operator-history