# Relationship history for MSHA mine 3300071

Current hierarchy: **Randolph G  Schmeltz Jr → Precision Aggregates III LLC → PRECISION AGGREGATES III LLC**

- 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:** Gottron Brothers Company → PRECISION AGGREGATES III LLC; 1950-01-01 to 2000-05-30; source msha-controller-operator-history
- **controller_controls_mine:** Thomas R  Gottron → PRECISION AGGREGATES III LLC; 1950-01-01 to 2000-05-30; source msha-controller-operator-history
- **controller_controls_operator:** Thomas R  Gottron → Gottron Brothers Company; 1950-01-01 to 2000-05-30; source msha-controller-operator-history
- **controller_controls_mine:** Randolph  Schmeltz Sr → PRECISION AGGREGATES III LLC; 1993-12-01 to 2021-04-23; source msha-controller-operator-history
- **operator_operates_mine:** Precision Aggregates III LLC → PRECISION AGGREGATES III LLC; 2000-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randolph  Schmeltz Sr → Precision Aggregates III LLC; 2000-05-31 to 2021-04-23; source msha-controller-operator-history
- **controller_controls_mine:** Randolph G  Schmeltz Jr → PRECISION AGGREGATES III LLC; 2021-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Randolph G  Schmeltz Jr → Precision Aggregates III LLC; 2021-04-24 to current/open; source msha-controller-operator-history