After the passage of 25 years since the implementation of Polish jig washeries, applying the electronically controlled machines, new directions of development have been set out and described. The designer teams, manufacturers and first of all the users of coal processing installations have formulated the technical and technological reasoning for the application of basic equipment, such as screens and pulsating water jigs. Achievements of the recent years, presented in the paper, include classifying and dewatering machines with unconventional solutions in respect of sieve decks as well single trough, multisectional fine coal and medium size grain jigs, meeting the requirements of the users. The economical analyses carried out for a number of projects, where the new solutions have been proposed, have shown promising results and have influenced the decisions taken in favour of their application in several raw coal ( of different types ) processing plants in Poland, as well as abroad.