VICTORIA, BC, November 20, 2017 – Great Thunder Gold Corp. (TSXV: GTG) completed a
soil geochemistry survey between October 9 and October 16, 2017 on its 100%-owned Urban
Thunder property located in the Windfall Lake gold camp of Quebec. The survey was
undertaken on GPS lines 400 metres apart with sampling every 100 metres. A total of 301
samples were drawn, to the extent possible, from the B soil horizon and were sent for analysis at
ALS Canada’s laboratory in Val d’Or, Quebec.

The samples were analyzed using ALS codes Au-ICP- 21 and ME-ICP41. Au-ICP21 consists of
analysis of gold by fire assay with an ICP-AES finish on 30-gram samples. The detection limits
of this method are from 0.001 g/t to 10 g/t gold. The samples were then submitted to the second
analytical method – ME-ICP41 – where elements are estimated using aqua regia digestion
followed by analysis using ICP-AES. Included in this package of 35 elements are silver, arsenic,
copper, nickel and zinc.

Results from the laboratory have only just been received, but a preliminary evaluation revealed
several gold anomalous results up to 24 ppb, mainly obtained on the northern part of the
property. Further analytical verification is required with the laboratory before proceeding with
the final evaluation of all the data obtained. A full report will follow in the coming weeks.
The technical contents of this release were approved by Donald Théberge, P.Eng., MBA, an
independent Qualified Person as defined by National Instrument 43-101.

ON BEHALF OF THE BOARD
Signed “Kevin C. Whelan”
Kevin C. Whelan, President
Direct line: (250) 474-6640