Element 109

Element 109, also known as Meitnerium or just Mr) is an element featured in A Darker Shade of White. It was known, but not used, by Richtofen and Group 935 as it didn't have the properties to re-animate dead cell like Element 115 did.

Discovery by Group 935
During the time when Element 115 meteors were crashing in places like Shi No Numa and Tunguska, there was a feelable force surrounding Germany. It was highly notable in Breslau and therefore the Der Riese facility. While Schuster was attempting to find any source of 115 he discovered a large rock in a forested area. He realized this was the source of the forces surrounding Germany. He went back to his colleagues to discuss whether it was a suitable replacement for 115, and after sampling it they realized it couldn't do what they knew 115 could do.

The MDT
As the fragment used to test was left in the facility, it started to affect the things around it. Schuster saw a visible reaction between the element and the MDT and realized that Element 109 was the solution to the random problems that hindered the ablities of the MDT. However, it is unlikely that he survived getting more 109 as he wasn't seen afterwards.

Eiswüste
In Eiswüste it returns as part of MDT Editing. It was discovered the small snowy village was also home to a 109 Rock. It is used to do what Schuster tried to do originally.

T-W2 Stick
In Nichtverrückt an item called the T-W2 Stick is discovered. It was created by Peter McCain secretly while spying on Group 935. He used a small portion of the 109 originally gathered by Schuster to create it. It was transported to Wittenau Sanatorium, as it was known to be able to inflict a high amount of damage to people. In End of the Line, it is charged using the Super Punch Machine and is used to stab and kill George A. Romero.