$ concrete mixer construction.

Construction Source Result
0 shallow pit . concrete
0 shallow pit * half-built simple concrete wall
* half-built simple concrete wall LINE_OXOX simple concrete wall
# rebar cage * half-built reinforced concrete wall
* half-built reinforced concrete wall LINE_OXOX reinforced concrete wall
# rebar cage * half-built column
* half-built column 1 column
. small rebar roof cage . concrete floor
. rebar roof cage . half-built reinforced concrete floor
. half-built reinforced concrete floor . reinforced concrete floor
* half-built simple concrete wall o simple concrete wall with embrasure
* half-built reinforced concrete wall o reinforced concrete wall with embrasure
O open safe
< road ramp up (low end)
< road ramp up (high end)