A.P. Mica Mine Workers Union, a trade union of mica mine labourers in the Gudur minefields in Andhra Pradesh, India. APMMU is affiliated to All India Trade Union Congress. APMMU claims a membership of 1200 out of a total of 7000 workers. Andhra Pradesh is one of the three leading areas where mica is mined in India. India produces roughly 62% of the world's mica but in recent years other materials substituting mica in its main applications (such as electronics) have impacted the price and mining of mica in India. References PUCL MM&P mica mining India overview Trade unions in India All India Trade Union Congress Mining trade unions Trade unions in Andhra Pradesh Year of establishment missing