You could also request the waste producer take photographs of the waste and make this available to weighbridge staff, so they can compare incoming mixtures of fines.
Gallech hefyd ofyn i'r cynhyrchydd gwastraff dynnu ffotograffau o'r gwastraff a sicrhau bod y rhain ar gael i staff y bont bwyso fel eu bod yn gallu cymharu cymysgeddau o ronynnau mân sy'n dod i mewn.