1891. In the Second Imperial Congress. Shozo Tanaka questioned the government of the time. Its contents ”I would like to ask the government. This is against the backdrop of the voices of the affected people and the progress of investigative activities on the issue of mineral poisoning at the Ashio Copper Mine. The Mining Ordinance issued by the government stipulates that the minister in charge(Minister of Agriculture and Commerce) can stop mining operations if they are harmful to the public interest. Now, here are people suffering who were originally living in place where there was no harm. Why is there no injunction?” It was literally a soul-searching question.
However,Mutsu Munemitsu,the Minister of Agriculture and Commerce at the time, silenced this question. This is because Mutsu's son had been adopted by Furukawa.
Shozo knew this as well.
Shozo continued with more questions.
"Your Excellency,Minister. You are the one who once made an argument against the Kishu Tokugawa family using the Universal Declaration of Human Rights. I believe that such a person would not privatize your public duties. However,I must say that it is negligent of you to not speak up at a time like this.”
Later,Shozo received a letter from Mutsu. "The cause of the pollution of the Watarase River is undetermined.”
In other words, the government completely ignored Shozo's opinion.