# Relationship history for MSHA mine 1518082

Current hierarchy: **Rex  Greer; Jerry  Greer → Elmo Greer & Sons, LLC → SOUTHEAST KY STONE**

- 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:** Southeast Kentucky Stone Company Llc → SOUTHEAST KY STONE; 1998-07-01 to 2001-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Joe  Newell et al → SOUTHEAST KY STONE; 1998-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe  Newell et al → Southeast Kentucky Stone Company Llc; 1998-07-01 to 2001-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Elmo Greer & Sons, LLC → SOUTHEAST KY STONE; 2001-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rex  Greer  et al → SOUTHEAST KY STONE; 2002-03-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rex  Greer  et al → Elmo Greer & Sons, LLC; 2002-03-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerry  Greer  et al → Elmo Greer & Sons, LLC; 2002-03-26 to current/open; source msha-controller-operator-history