UPDATE 2-Joy Global expands in China mining with IMM stake

* Joy Global shares up 1.2 pct; Caterpillar lower
(Adds details on deal terms, analyst comment, updates shares)

Source: http://feeds.reuters.com/~r/reuters/mergersNews/~3/IRA_c5MAJ6A/imm-joyglobal-idUSN1E76D0FE20110714

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