They say a price review may happen in the coming days.
The major steelmakers that buy ore from NMDC are state-owned Rashtriya Ispat Nigam Ltd, Essar Steel, JSW Ispat and JSW Steel.
Of these, JSW Steel is currently using ore it bought from Karnataka's e-auctions.
The company has two to three months' supplies at its plant.
The Supreme Court had asked NMDC to mine a million tonnes of ore a month and the company is currently doing 0.55-0.6 million tonnes.
Essar Steel, which buys most of its quantities from NMDC and from local miners has said it will review prices based on the increase by NMDC.
Tata Steel, which has its entire iron ore captive, from its own mines, hasn't increased prices.
Even if the company does do so, it will be mainly on the back of the demand revival and not raw material push.
Jayant Acharya, director (sales and marketing), JSW Steel, said the company had not raised prices.
"We are not too sure. We will look at the situation and then take a call," he said.
The steel demand in India, on an average, has grown by 8-10 per cent in the past five years, barring the financial year that just ended.
In FY12, the steel demand grew a mere five-six per cent, half of what was projected. However, the tide has turned and steelmakers are seeing renewed buying and stocking from customers.
An analyst tracking the sector said, "There is some activity on the construction
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