Attachment: 8-K-01-25-2022-CAO-TREAS


gldd-20220125.xsd
Attachment: XBRL TAXONOMY EXTENSION SCHEMA


gldd-20220125_lab.xml
Attachment: XBRL TAXONOMY EXTENSION LABEL LINKBASE


gldd-20220125_pre.xml
Attachment: XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE