silver investment: The Lowest Risk, Highest Return Potential, page-178

I read the article. From the paragraph 2 of article:

"Metals Focus projected 2018 silver-mine supply of 867.2 million ounces, compared to 856.9 million in 2017, which in turn would be down from 888.3 million in 2016, said Oliver Heathman, head of mining research for the consultancy."

Furthermore, paragraphs 4 and 5:

'Heathman blamed the decline in 2017 production on disruptions at certain mines, such as a strike by union workers at Hecla Mining Co.’s (NYSE: HL) Lucky Friday Mine in Idaho and the shutdown of Tahoe Resources Inc.’s (TSX: THO; NYSE: TAHO) Escobol Mine due to licensing issues with the Guatemalan government.
“The increase in 2018 is expected to be driven by those issues being resolved and those mines coming back on line and driving up production,” Heathman reported.'

In other words, hoped for reversal of union trouble may reverse only some of the reduction in silver mining output since 2016.
No exponential growth happening in silver production.