There is no need to provide a cobalt block, which is actually 98% salt and may reduce the amount of loose minerals your goats consume if they are licking a cobalt salt block.

The dispute harks back to August 2015 when Sonangol agreed to buy Cobalt’s stakes in pre-salt blocks 20 and 21 for $1.75 billion.

Cobalt, whose main stakeholder is Goldman Sachs, said in a statement tests at its Cameia-1 well in Block 21 confirmed the presence of a 1,180 foot "gross continuous oil column." ...

Cobalt has a significant presence in the Angolan pre-salt. The company's website states that it is the operator of Blocks 9, 20, and 21 in Angola's Kwanza Basin.