She washed her husband's overalls everyday not knowing it would eventually kill her
![She washed her husband's overalls everyday not knowing it would eventually kill her](https://i2-prod.walesonline.co.uk/incoming/article29466551.ece/ALTERNATES/s615/1_WNS_030724_Washing_Clothes_Death_005xJPG.jpg)
Joan Davies died at the age of 89, a decade after her husband died of the same cancer caused by asbestos. Now their son has spoken of the ongoing danger posed by the once widely-used substance