Requirements and terms are established to request change of the mining concession period and the extension of the economic evaluation period - 04/02/2020
The term for the payment of the mining conservation patents is extended, through a questioned ministerial agreement - 03/25/2020
Relevant aspects to consider for the Ordinary General Shareholders' Meetings in relation to the State of Health Emergency by COVID19 - 03/25/2020
Patent and Trademark Office issues an Official Communication regarding the Sanitary Emergency - 03/16/2020
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