clear zone zone

the alternative occurrence of fractured zone and non-fractured zone

trade-wind zone [= zone of trade wind]

zone by zone upgoing

building rubble

cement stability in the rubble

Chaotic rubble of water that not cement sand base

coursed rubble wall

cyclopean rubble masonry

fault rubble

foundation on rubble fill site

Grouted rubble dam

large rubble

lime rubble rock

Open Cell Porous Rubble thermoplastics Blend

pell mell rubble

pell-mell rubble

random rubble armoured structure

Random Rubble Fill