I do apprecate the response but this should be answered by the company. Obviously the disclosure that there was not a PFAS  contract has not helped.

Vale did state

"in addition to using natural gas, the company seeks to develop other alternative sources. Vale started testing, also at the São Luís plant, with biocarbon in the production of pellets. Biocarbon is a renewable product, obtained through the carbonization of biomass.

What Vale did not mention is plasma which raises flags.

It should be noted that based on estimates and March 2022 commercial electricity costs in Brazil and 75% effeciency of Torches  it appears electricity could cost 600 % or  more than Natural gas and that doesn't include infrastructure costs. Even if torches are 100% they still appear to have a huge operating disadvantage.

This is why I have specifically asked the CEO for a cost analysis...A "how many miles per gallon"  comparison prepared by the company not by people on the web.  It impossible for investors to calculate without the Plasma effeciency.  Clearly the investors should be told the economic viability of a product so they can make intelligent investment decisions. 

The deafeaning silence is the issue.