Assertion: hopper dredge | /r/HasProperty | unavailable
Facets:
Source sentences:
text: Some hopper dredges are designed so they can also be emptied from above using pumps if dump sites are unavailable or if the dredge material is contaminated.
text: Some hopper dredges are designed so they can also be emptied from above using pumps if dump sites are unavailable or if the dredge material is contaminated.