The company said a contractor died from injuries he received in an accident south of its Duckhead open pit mine.
Two men were working on assembling a radio communication mast to upgrade services in the area when the accident occurred.
Beadell said the second contractor was transported by air to a hospital in nearby Macapa, where he was in a stable condition.
The company said it had informed authorities and would assist with investigations.
Counselling services were being provided to family, friends and colleagues.
“This is a tragic accident, and our thoughts and prayers are with the family and loved ones of the men at this time,” Beadell managing director Peter Bowler said.
Beadell said mining at Duckhead would resume today, but mining and milling at Tucano had continued as normal.
Tucano is Brazil’s third-largest gold mine, producing 182,547 ounces of gold in 2013.
Production is set to rise to 190,000-210,000oz gold this year.