At SkyTruth, we've observed duplicates in the Infrastructure data where single pieces of infrastructure appear multiple times in the DB.
When comparing with Sentinel-1 imagery, only a single piece of infrastructure appears to be present. To see in Cerulean (which relies on the GFW API), view the infrastructure locations on the map with the squiggly line button next to each infrastructure source: https://cerulean.skytruth.org/?zoom=11.419613&lat=57.192989&lng=0.99397&slickId=3573395 - Also shown in screenshot. Structure IDs are 352531 and 116096 in this example, but we observe this relatively frequently.
This is an issue for our advocates and journalists investigating causes of marine pollution because it looks like there are 2 possible polluters when there is actually just 1 likely culprit.
--Kris