# Relationship history for MSHA mine 3102194

Current hierarchy: **William D Kelly Sr → K AND K SAND CO. INC. → Lee County Pit**

- 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

- **controller_controls_mine:** William D Kelly Sr → Lee County Pit; 1981-02-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kelly Sand Co., Inc. → Lee County Pit; 2003-11-03 to 2012-09-30; source msha-controller-operator-history
- **controller_controls_operator:** William D Kelly Sr → Kelly Sand Co., Inc.; 2003-11-03 to 2012-09-30; source msha-controller-operator-history
- **operator_operates_mine:** K AND K SAND CO. INC. → Lee County Pit; 2012-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lee E.  Kelly → Lee County Pit; 2012-10-01 to 2013-07-07; source msha-controller-operator-history
- **controller_controls_operator:** Lee E.  Kelly → K AND K SAND CO. INC.; 2012-10-01 to 2013-07-07; source msha-controller-operator-history
- **controller_controls_mine:** William D Kelly Sr → Lee County Pit; 2013-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William D Kelly Sr → K AND K SAND CO. INC.; 2013-07-08 to current/open; source msha-controller-operator-history