Given the input sentence, please extract the subject and object containing a certain relation in the sentence according to the following relation types, in the format of "relation1: word1, word2; relation2: word3, word4". Relations include: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Aug 20 Canadian miner Eldorado Gold Corp said it would suspend all mining and development activities in the Halkidiki region in Greece from next week after the Greek Ministry of Energy on Wednesday revoked approvals for technical studies in the region.

Answer: industry: Eldorado Gold, mining