By the late 1850s and early 1860s, these colliers were joined by groups of Irish farmers who had immigrated to America after the devastating Great Famine in their homeland. The Irish were generally unskilled in the field of mining and so received the lowest-skilled, lowest-paying jobs. Over time, the Irish learned the skills of mining and moved into better-paying, higher-skilled jobs. By the time of the 1880s and 1890s, the low-skill jobs were being taken by the new wave of immigrants from Eastern and Southern Europe. These groups included peoples from Slovakia, Poland, Ukraine, Lithuania, and Italy. Once again, the new immigrants took many years to develop the knowledge and skills to move into the higher-skilled positions in the colliery.