Typically, we have around 78 operatives fully trained at the start of each winter season, however this number may fluctuate each year in line with required service levels.
Fel arfer, mae gennym oddeutu 78 o weithwyr wedi'u hyfforddi'n llawn ar ddechrau pob tymor gaeaf, ond gall y nifer hwn amrywio bob blwyddyn yn unol â'r lefelau gwasanaeth gofynnol.