Name the metals which are associated with the following terms in their extraction from their ores :
(a) Bessemer's converter
(b) Blast furnace
( c) Aluminityhermic process
(d) Magnetic separation.

Explanation

To answer the question regarding the metals associated with specific extraction processes, we will go through each term one by one and identify the corresponding metal.

### Step-by-Step Solution:

1. **Bessemer's Converter**:
- The Bessemer process is primarily used for the conversion of pig iron into steel. However, it can also be associated with the extraction of copper.
- **Metal associated**: Iron (and sometimes copper).

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