Economic Sectors and Infrastructure

Limestone is a key raw material in cement and iron/steel industries (as a flux). It is not a primary input in oil refining processes.

Prior to nationalization, commercial banks in India were largely urban-centric and focused on large-scale industries, neglecting agriculture, small-scale industries, and exports. This imbalance was a key justification for the state taking control of the banking sector.

Machines are the capital goods as machines are used in producing other goods ,rather than being bought by consumers.

Capital refers to man-made goods used in the production process. Forests are considered natural resources or land, not man-made capital.

India was famous for its high-quality handloom textiles. The British colonial policy, which included high tariffs on Indian goods and the import of cheap machine-made British textiles, led to the collapse of the Indian textile industry.

Infrastructure is divided into two categories: 

In economics, capital refers to man-made assets used in the production of goods and services. All listed items are examples of physical infrastructure capital.

Infrastructure covers those supporting services that help directly in the growth of productive activities in agriculture as well as industry. These services have a wide range from the provision of health services and education facilities to the supply of needs such as power, irrigation, transport, telecommunications, etc.

They concern with the supply of such services as to meet the basic needs of a society. In simple words, social infrastructures refer those basic services such as education and training. It also includes health and sanitation, drinking water, housing, sewerage, etc. Social infrastructures are also termed as ‘social overheads’.
These social overheads indirectly support the economic systems. They indirectly increase the productivity and the economy sees the impact after some time. Social infrastructures lead to growth in the long run.

Biggest public sector undertaking is railways

Telecommunications infrastructure is very similar. It is a physical medium through which all Internet traffic flows. This includes telephone wires, cables (including submarine cables), satellites, microwaves, and mobile technology such as fifth-generation (5G) mobile networks.

Infrastructure is something that is created to facilitate common public of the country to utilize the same for their own business which will bring development of general benefits to the common man. For instance if you have roads built, it will benefit the common man. Hospitals, railway station, airports etc fall in this category. Now textile industry doesn't fall in the same category. I guess that's why an industry is not a part of infrastructure.