He could not say if it was done maliciously‚ but "it's definitely not a shortage of specialists".
Anderson said there was a dual protection system to contain liquids.
"Even in the event that the lock-out system‚ which isolates the chemical sewer‚ were to be unintentionally or inadvertently left open‚ this sewer is connected to the site’s main oily water sewers‚ from which water does not flow into the local river system. All the water in these dams are recycled for eventual use (after biological treatment) as process water in our Secunda Operations."
The whistleblower alleged the chemicals increased fish mortality and disturbed the ecology.
"Apparently the people from Embalenhle use it [the river] for fishing‚ some baptisms‚ etc. Kids swim in the river‚ as kids do."
He added: "People downstream who use water from the spruit for irrigation might also experience crop losses."
According to the US Centres for Disease Control and Prevention‚ vanadium can result in coughing lasting a couple of days‚ nausea‚ mild diarrhea‚ and stomach cramps.
Anderson said they use vanadium and potassium carbonate at their operations in Secunda to protect the metal of the equipment and absorb carbon dioxide.
"Due to the potentially harmful impact these chemicals can have on people and the environment‚ as these chemicals are managed [handled used and disposed of] in accordance with the various requirements governing these hazardous substances."