The correct answer is option 'A', Dhanbad.

The National School of Mines, also known as NSM or ISM (Indian School of Mines), is located in Dhanbad, Jharkhand, India. It is one of the premier engineering institutions in the country and has a rich history of excellence in education and research in the field of mining and mineral sciences.

The National School of Mines was established in 1926, and it was the first institution in India to offer courses in mining engineering. Over the years, it has expanded its academic programs to include various branches of engineering, applied sciences, management, and social sciences.

The institution is situated in the city of Dhanbad, which is known as the "Coal Capital of India" due to its rich reserves of coal. Dhanbad is located in the state of Jharkhand, in the eastern part of the country. It is well-connected by rail and road networks, making it easily accessible for students and faculty members.

Key Points:
- The National School of Mines is located in Dhanbad, Jharkhand, India.
- Dhanbad is known as the "Coal Capital of India" due to its rich reserves of coal.
- The institution was established in 1926 and was the first in India to offer courses in mining engineering.
- Over the years, the institution has expanded its academic programs to include various branches of engineering, applied sciences, management, and social sciences.
- Dhanbad is well-connected by rail and road networks, making it easily accessible for students and faculty members.