# Relationship history for MSHA mine 0900007

Current hierarchy: **William F  Bryant → Gold Eagle Quarries Inc → Peerless Blue**

- 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:** Comolli Granite Company → Peerless Blue; 1950-01-01 to 1980-06-19; source msha-controller-operator-history
- **controller_controls_mine:** Louis  Comolli → Peerless Blue; 1950-01-01 to 1980-06-19; source msha-controller-operator-history
- **controller_controls_operator:** Louis  Comolli → Comolli Granite Company; 1950-01-01 to 1980-06-19; source msha-controller-operator-history
- **controller_controls_mine:** Marshall B  Mercer → Peerless Blue; 1980-01-01 to 1981-01-04; source msha-controller-operator-history
- **operator_operates_mine:** Comolli Granite Company → Peerless Blue; 1980-06-20 to 1981-01-04; source msha-controller-operator-history
- **controller_controls_operator:** Marshall B  Mercer → Comolli Granite Company; 1980-06-20 to 1981-01-04; source msha-controller-operator-history
- **operator_operates_mine:** Granite Panelwall Company → Peerless Blue; 1981-01-05 to 1990-09-30; source msha-controller-operator-history
- **controller_controls_mine:** F Browne Gregg Trust → Peerless Blue; 1981-01-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** F Browne Gregg Trust → Granite Panelwall Company; 1981-01-05 to 1990-09-30; source msha-controller-operator-history
- **controller_controls_mine:** James A  Adams  et al → Peerless Blue; 1988-10-01 to 2005-07-09; source msha-controller-operator-history
- **operator_operates_mine:** Gold Eagle Quarries Inc → Peerless Blue; 1990-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James A  Adams  et al → Gold Eagle Quarries Inc; 1990-10-01 to 2005-07-09; source msha-controller-operator-history
- **controller_controls_mine:** James Anthony  Adams II → Peerless Blue; 2005-07-10 to 2014-03-23; source msha-controller-operator-history
- **controller_controls_operator:** James Anthony  Adams II → Gold Eagle Quarries Inc; 2005-07-10 to 2014-03-23; source msha-controller-operator-history
- **controller_controls_mine:** James A  Adams  et al → Peerless Blue; 2014-03-24 to 2016-06-30; source msha-controller-operator-history
- **controller_controls_operator:** James A  Adams  et al → Gold Eagle Quarries Inc; 2014-03-24 to 2016-06-30; source msha-controller-operator-history
- **controller_controls_mine:** William F  Bryant → Peerless Blue; 2016-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William F  Bryant → Gold Eagle Quarries Inc; 2016-07-01 to current/open; source msha-controller-operator-history