Distortion by duplicates

Summary: A large fraction of FracFocus disclosures since 2016 contain apparently unintentional duplicate records. These records distort the quantity of chemicals used in fracking jobs, sometimes by more than 100,000 pounds. These duplicates have remained largely uncorrected. Although duplication can be visually obvious in FracFocus displays of data, they are not trivial to distinguish fromContinueContinue reading “Distortion by duplicates”