For the weight of soils and stones disposed at the lower rate of tax, there was a 15% increase from the same quarter a year earlier, to 49 thousand tonnes.
Ar gyfer pwysau priddoedd a cherrig a waredwyd ar y gyfradd dreth is, bu gostyngiad o 15% o'r un chwarter flwyddyn ynghynt, i 49 mil o dunelli.