Whether excise duty is applicable on sale of manganesedioxid

I wish to know whether excise duty is applicable to sales on naturally mined manganesedioxide

in india after budget of 2011, specially if raw ore is procured excise free & then simply pulverised & then sold.

poojagoyal

more info

"""""""Kindly Clarify this as we purchase material from Govt co who are not covered under

Excise & having turnover of more than 600 to 800 crores. They also do not issue

Any excise exemption certificate . their bills & challans do not mention any excise nos

Nor any exemption gate pass is issued by them as manganesedioxide ores are natural material & we only grind or pulverize them (size reduction ) to our needs .

We do not do any refining or concentrating activity. """"""