# Relationship history for MSHA mine 5000443

Current hierarchy: **Charlie  Chausse → F S & G Aggregate Inc → F S & G Aggregate 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:** Fairbanks Sand & Gravel Inc → F S & G Aggregate Inc; 1950-01-01 to 1983-09-25; source msha-controller-operator-history
- **controller_controls_mine:** H M  Patterson → F S & G Aggregate Inc; 1950-01-01 to 1983-09-25; source msha-controller-operator-history
- **controller_controls_operator:** H M  Patterson → Fairbanks Sand & Gravel Inc; 1950-01-01 to 1983-09-25; source msha-controller-operator-history
- **operator_operates_mine:** Fairbanks Sand & Gravel Inc → F S & G Aggregate Inc; 1983-09-26 to 1984-08-29; source msha-controller-operator-history
- **controller_controls_mine:** James  Ryerson → F S & G Aggregate Inc; 1983-09-26 to 1984-08-29; source msha-controller-operator-history
- **controller_controls_operator:** James  Ryerson → Fairbanks Sand & Gravel Inc; 1983-09-26 to 1984-08-29; source msha-controller-operator-history
- **operator_operates_mine:** Fairbanks Sand & Gravel Inc → F S & G Aggregate Inc; 1984-08-30 to 1995-05-22; source msha-controller-operator-history
- **controller_controls_mine:** Sealaska Corp → F S & G Aggregate Inc; 1984-08-30 to 1995-05-22; source msha-controller-operator-history
- **controller_controls_operator:** Sealaska Corp → Fairbanks Sand & Gravel Inc; 1984-08-30 to 1995-05-22; source msha-controller-operator-history
- **operator_operates_mine:** Fairbanks Sand & Gravel Inc → F S & G Aggregate Inc; 1995-05-23 to 1996-05-12; source msha-controller-operator-history
- **controller_controls_mine:** Dave T  Chausse → F S & G Aggregate Inc; 1995-05-23 to 1996-05-12; source msha-controller-operator-history
- **controller_controls_operator:** Dave T  Chausse → Fairbanks Sand & Gravel Inc; 1995-05-23 to 1996-05-12; source msha-controller-operator-history
- **operator_operates_mine:** F S & G Aggregate Inc → F S & G Aggregate Inc; 1996-05-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Charlie  Chausse → F S & G Aggregate Inc; 1996-05-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charlie  Chausse → F S & G Aggregate Inc; 1996-05-13 to current/open; source msha-controller-operator-history