3A and 3A1 secimen report

This research was conducted on account of two pieces of rock. First, I dusted the pieces and prepared them for examination. Then, I examined the pieces. Here are my findings:

There are 2 pieces of rock which appear to have identical surface texture and chemical composition. Thus, the pieces were probably part of one structure. The pieces were found in the same location.
Both pieces connect to create a continuous specimen, showing a nearly linear ridge, which probably served as a locking piece in sidewalk construction of the late mezzanine era. Marks on the specimen indicate late industrial manufacturing processes, probably from the area once known as central North America.
No rare mineral deposits have been identified. Only calcium – concrete and terrestrial carbon.