# Relationship history for MSHA mine 2901767

Current hierarchy: **Dan  Schumacher → Sun Teal Aggregates Inc → SUNTEAL AGGREGATES**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Nowlin Kent → SUNTEAL AGGREGATES; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kent Nowlin Construction Inc → SUNTEAL AGGREGATES; 1979-01-01 to 1983-02-15; source msha-controller-operator-history
- **controller_controls_operator:** Nowlin Kent → Kent Nowlin Construction Inc; 1979-01-01 to 1983-02-15; source msha-controller-operator-history
- **operator_operates_mine:** Knc Inc → SUNTEAL AGGREGATES; 1983-02-16 to 1986-05-15; source msha-controller-operator-history
- **controller_controls_mine:** Rogers Construction Inc → SUNTEAL AGGREGATES; 1983-02-16 to 1986-05-15; source msha-controller-operator-history
- **controller_controls_operator:** Rogers Construction Inc → Knc Inc; 1983-02-16 to 1986-05-15; source msha-controller-operator-history
- **operator_operates_mine:** Adobe Paving Inc → SUNTEAL AGGREGATES; 1986-05-16 to 1991-07-28; source msha-controller-operator-history
- **controller_controls_mine:** Ernest G  Motto → SUNTEAL AGGREGATES; 1986-05-16 to 1991-07-28; source msha-controller-operator-history
- **controller_controls_operator:** Ernest G  Motto → Adobe Paving Inc; 1986-05-16 to 1991-07-28; source msha-controller-operator-history
- **operator_operates_mine:** Fesco Inc → SUNTEAL AGGREGATES; 1991-07-29 to 2001-08-14; source msha-controller-operator-history
- **controller_controls_mine:** Cecil  Henry → SUNTEAL AGGREGATES; 1991-07-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cecil  Henry → Fesco Inc; 1991-07-29 to 2001-08-14; source msha-controller-operator-history
- **operator_operates_mine:** Sun Teal Aggregates Inc → SUNTEAL AGGREGATES; 2001-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dan  Schumacher → SUNTEAL AGGREGATES; 2001-08-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan  Schumacher → Sun Teal Aggregates Inc; 2001-08-15 to current/open; source msha-controller-operator-history