章 318: The Unknown

Roland scribbled quickly on a piece of paper. Several paragraphs streamed from the tip of his quill.

He used to draft mechanical drawings with his computer all the time before coming to this world. Since he had rarely used pen, he had not anticipated that he would employ this ancient recording method again.

Beside him lay two documents, both of which were the plans he was going to implement.

One was about the massive production of sulfuric acid. Anna and Soraya had already produced the equipment required. The previous lead reaction vessel had been replaced by a more sturdy iron one, with an anti-corrosion coating on the inner side. The new vessel was three times larger than the trial version.