The above intercept from the AGB zone graded 1.76g/t gold and 119.46g/t silver, while another hole returned results including 0.88m of 15.55g/t gold and 3,490g/t silver, or 59.18g/t Au-eq.
"Results at AGB are providing indications for bulk tonnage mining, yielding higher-grade gold and silver compared to the neighbouring Cliffs Creek and Dukes Ridge zones," CEO John Williamson said.
"This zone saw a small amount of underground mining plus-30 years ago, but the new results are showing potential for an openpit mining scenario."
He said the mineralisation at AGB remained open in all directions.
The news follows initial results in January from Benchmark's Marmot discovery which was described as similar to the multi-million ounce Cliffs Creek target, 3km away.
The company is financed to a mining decision in 2022, thanks to a more than doubled placement which raised C$50.3 million in September.
High profile investor Eric Sprott holds about 20% of the company.
Benchmark shares (TSXV: BNCH) have ranged from C17c-$1.64 over the past year.
They closed up 4.7% to $1.11 on Friday, valuing it at $136.6 million (US$107 million).