Zimbabwe's law allow ministers to pass regulations that do not need to be approved by Parliament first, but within two months the Parliamentary Legal Committee has to make a ruling on their constitutionality.
The national grid power supply to its flagship Kumtor mine in Kyrgyzstan has been disrupted by local protesters who have been blocking the road leading to the site.
Capital expenditure in mining peaked last year, stabilized in the second half of 2012 and then plunged steeply in the March quarter, wiping almost $1.5 billion off Australia's quarterly output.
