The can story made the news here in Japan

１６階建てビルの倒壊によって露出したコンクリートの柱などの中に、複数のサラダ油や塗料の缶が埋め込まれているのが見つかった。台湾内政部（内政省）は、手抜き工事の可能性があるかどうか調査する方針だ

"It was found that concrete pillars, etc., that were exposed when the 16-story building collapsed, had been stuffed with cooking oil and paint cans. The Taiwan Interior Ministry is planning to examine whether or not there was corner-cutting during the construction."

http://www.yomiuri.co.jp/world/20160206-OYT1T50107.html

"it was the best butter cooking oil".

https://www.cs.cmu.edu/~rgs/alice-VII.html

I saw that picture before and didn't realize those were oil cans!