# Relationship history for MSHA mine 2003105

Current hierarchy: **Mike G  Bates → Pleasant Lake Sand & Gravel LLC → PLEASANT LAKE SAND & GRAVEL 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: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** 3 R'S Sand & Trucking Inc Llc → PLEASANT LAKE SAND & GRAVEL LLC; 1999-04-01 to 2001-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Richard L  Bedell → PLEASANT LAKE SAND & GRAVEL LLC; 1999-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard L  Bedell → 3 R'S Sand & Trucking Inc Llc; 1999-04-01 to 2001-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Pleasant Lake Sand & Gravel LLC → PLEASANT LAKE SAND & GRAVEL LLC; 2001-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mike G  Bates → PLEASANT LAKE SAND & GRAVEL LLC; 2001-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mike G  Bates → Pleasant Lake Sand & Gravel LLC; 2001-07-01 to current/open; source msha-controller-operator-history