# Relationship history for MSHA mine 0202930

Current hierarchy: **Hickman's Egg Ranch Inc → Cross Spear Limestone LLC → Cross Spear Marble**

- 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:** Cross Spear Marble Inc → Cross Spear Marble; 2001-03-01 to 2011-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Don  Riggs  et al → Cross Spear Marble; 2001-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Don  Riggs  et al → Cross Spear Marble Inc; 2001-03-01 to 2011-06-30; source msha-controller-operator-history
- **controller_controls_operator:** David  Lincoln  et al → Cross Spear Marble Inc; 2001-03-01 to 2011-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Cross Spear Limestone LLC → Cross Spear Marble; 2011-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hickman's Egg Ranch Inc → Cross Spear Marble; 2011-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hickman's Egg Ranch Inc → Cross Spear Limestone LLC; 2011-07-01 to current/open; source msha-controller-operator-history