Opaja Sonar Mati

In Kadamoni, a village far from the city, the educated, jobless young Hemanta Saikia is advised by Shivaram Kakati and his daughter Purnima to farm his own land. He takes to the idea of farming scientifically on a cooperative basis and, with a few other young men, applies to a nationalised bank for a loan. His plan alarms the village moneylender Umaram, who lends money against mortgaged land at high interest and would lose his hold if the villagers turned to the bank. Umaram also dislikes Hemanta's closeness to Purnima. Hemanta's father presses a rich city man, Nirmal Hazarika, to start a factory on the two bighas mortgaged to Umaram, but Hazarika's son Pankaj and daughter Arpana resist the plan.

Brajen Baruah directed five films in all, and this was the last. He finished shooting in Lakhimpur but did not live to edit it. Pragati Cine Productions produced, Ramen Baruah composed the music and Nalin Duwara shot it. The film grew out of the cooperative movement that swept India from the 1930s to the 1960s and showed the promise it held for agriculture.

It was a commercial success and won the National Award for Best Assamese Film for 1972.

In Brajen Baruah's filmography, Opaja Sonar Mati came after Dr. Bezbarua (1969) and Mukuta (1970).