# Relationship history for MSHA mine 4003137

Current hierarchy: **Fred (Pete)  Irving → IMI Aggregates LLC → IMI Middle Tennessee**

- 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:** Middle Tennessee Limestone LLC → IMI Middle Tennessee; 1998-11-01 to 2006-04-03; source msha-controller-operator-history
- **controller_controls_mine:** James  Ward  et al → IMI Middle Tennessee; 1998-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Ward  et al → Middle Tennessee Limestone LLC; 1998-11-01 to 2006-04-03; source msha-controller-operator-history
- **operator_operates_mine:** Middle Tennessee Limestone Inc. → IMI Middle Tennessee; 2006-04-04 to 2024-11-06; source msha-controller-operator-history
- **controller_controls_mine:** James  Ward  et al → IMI Middle Tennessee; 2006-04-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Ward  et al → Middle Tennessee Limestone Inc.; 2006-04-04 to 2024-11-06; source msha-controller-operator-history
- **controller_controls_mine:** Fred (Pete)  Irving → IMI Middle Tennessee; 2020-09-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** IMI Aggregates LLC → IMI Middle Tennessee; 2024-11-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fred (Pete)  Irving → IMI Aggregates LLC; 2024-11-07 to current/open; source msha-controller-operator-history