Phosphor-Gypsum

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About Phosphor-Gypsum:

Phosphorus is a mineral critical to all life on Earth. As a requirement of all biological beings, it is a cornerstone of nutrition for plants, animals, and people.
Phosphogypsum is a waste by-product from the processing of phosphate rock in plants producing phosphoric acid and phosphate fertilizers, such as superphosphate.
It is used in agriculture for soil amendment or as fertilizer, as well as in the brick and cement industry, and road construction.

Key facts about NHAI

It was constituted by an Act of Parliament in 1988 under the administrative control of the Ministry of Road Transport and Highways.
NHAI has been set up as a Central Authority to develop, maintain and manage the National Highways entrusted to it by the Government of India.
The Authority consists of a full-time Chairman and not more than five full-time Members and four part-time Members who are appointed by the Central Government.

Q1) What is Gypsum?

Gypsum is a mineral found in crystals as well as masses called gypsum rock. It is a very soft mineral and it can form very pretty, and sometimes extremely large.

Source: NHAI to Explore Use of Phosphor-Gypsum in National Highway Construction