educational services, namely, conducting conferences in the fields of mining engineering, metallurgy, and mineral exploration and distributing course material in connection therewith

'conduct':4 'confer':5 'connect':21 'cours':18 'distribut':17 'educ':1 'engin':11 'explor':15 'field':8 'materi':19 'metallurgi':12 'mine':10 'miner':14 'name':3 'servic':2 'therewith':22

technical pamphlets, books and papers in the fields of mining engineering, metallurgy and exploration

'book':3 'engin':11 'explor':14 'field':8 'metallurgi':12 'mine':10 'pamphlet':2 'paper':5 'technic':1

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