What is the hydrometallurgy of silver or gold commonly known as ?

Explanation

To answer the question, "What is the hydrometallurgy of silver or gold commonly known as?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Hydrometallurgy**:
- Hydrometallurgy refers to the extraction of metals from their ores using aqueous solutions. The term "hydro" indicates the use of water, while "metallurgy" pertains to the extraction and processing of metals.

2. **Identifying the Process for Silver and Gold**:
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