Party’s full caucus endorsed legislation on Monday morning after three meetings, meaning it can go before parliament this week

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Labor’s bid to protect Tasmania’s salmon industry from legal challenge over its impact on the endangered Maugean Skate is one step closer, amid unease about the government’s commitment to environmental protection.

In a sign of internal angst, sources told Guardian Australia that Labor’s environment caucus committee needed three meetings between Friday and Sunday night to finally reach agreement on the legal intervention.

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