lavra (ha) => mine (hectares)

Hectare - Wikipedia, the free encyclopedia
www.en.wikipedia.org/wiki/Hectare‎
The hectare (/ˈhɛktɛər/ or /ˈhɛktɑr/; symbol ha) is a metric unit of area defined as 10,000 square metres (100 m by 100 m), and primarily used in the ...

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Note added at 3 hrs (2014-01-15 18:26:42 GMT)
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Noun

lavra f (plural lavras)

authorship
(uncountable) cultivation; agriculture
act of tilling
(Brazil) mine
(Brazil, uncountable) mining

Synonyms

(authorship): autoria
(cultivation): cultivo, lavoura, agricultura
(act of tilling): cultivo, amanho, lavragem
(mine): mina, escavação
(mining): mineração, extração
http://en.wiktionary.org/wiki/lavra