Who headed the labour union strike in the Digboi Refinery in 1939 ........

Explanation:

In 1939, there was a major labour union strike in the Refinery. The Gandhi Movement of Congress for Indian Independence struggle; backed by labour rights and equality status was headed by Sardar Amar Singh Marwah. The break of the World War II coincided with the Digboi labour strike resulted in harsh steps taken by the British Administrative offices to crush the strike. The Viceroy and the Governor had intervened to bring a settlement adopting sturdy steps were take to crush the union by shooting down of the president of the labour union to be followed by issuing orders of Quit Digboi, Quit Lakhimpur and finally Quit Assam to the leaders of the labour union.