IMO.
1 Plummer terriers are ridiculed thanks to DBP.being openly disrespectful for the past 20 years ..to those owners of other breeds.
2 The % of failed earth working Plummers would be the same as any other breed, of working terrier, if we looked at the statistics considering the numerical numbers of plummers 1000 since 1994 not a lot !..compared to all the other breeds.
3 I have owned, bred, entered and trained earth working plummer terriers both pre ban and "now" .some of my "now stock " work in ireland, where it is easier to find and work quarry but is actualy a harder enviroment to