Four big iron pipes used for preparing claymore mines, 40kg gun power and live wire were also seized from Salpaguda forest on December 18.
Security personnel had recovered two powerful landmines each weighing 25 to 30 kg, two tiffin bombs and a country-made gun from Musulmunda forest the previous day.
“Security forces are on high alert. The counter-insurgency operations are being regularly assessed and changes incorporated accordingly. Maoists had dumped the explosives in forests for use in future. We expect more success,” said Koraput SP Awinash Kumar.