Assertion: concrete revetment | /r/AtLocation | extensive use
Facets:
value: on the: mississippi river
type: LOCATION
Source sentences:
text: This notably has been the case with willow,, lumber mat, and articulated slab revetments which have been in extensive use on the: Mississippi River; Willow and lumber mats, continuous concrete slabs, and articulated concrete revetments are all subject to rupture and disintegration when holes fornm beneath :them; either by sliding of bank portions or washing out of the bank materials.