# Rhea Proserpina, Dis Mater

**Entity Type:** Specialist

## Properties

| Field | Value |
|-------|-------|
| Rarity | Epic |
| Category | Finance |
| Slot Type | Specialist |
| Scope | Mines and Quarries in range |

## Effects

| Effect Type | Target | Value | Scope |
|------------|--------|-------|-------|
| Workforce Required | Mines and Quarries | -40% | Radius-based |
| Maintenance Costs | Mines and Quarries | -80% | Radius-based |

## Improves Buildings

- [Iron Mine (Albion)](../buildings/iron-mine-albion.md)
- [Iron Mine (Latium)](../buildings/iron-mine-latium.md)
- [Gold Panner (Latium)](../buildings/gold-panner-latium.md)
- [Copper Mine (Albion)](../buildings/copper-mine-albion.md)
- [Sand Refinery (Albion)](../buildings/sand-refinery-albion.md)
- [Sand Refinery (Latium)](../buildings/sand-refinery-latium.md)
- [Clay Dryer (Albion)](../buildings/clay-dryer-albion.md)
- [Silver Mine (Albion)](../buildings/silver-mine-albion.md)
- [Tin Mine (Albion)](../buildings/tin-mine-albion.md)

## Source

All Traders

## Stack Rules

Unknown

## Usage Patterns

Slot into a Villa or Officium covering mines and quarries to dramatically reduce both workforce requirements and maintenance costs. The -80% maintenance reduction makes this specialist extremely valuable for cost optimization of mining operations.

## Common Pitfalls

Misplaced radius leads to zero value; only affects mines and quarries within the Villa or Officium range.