Yorbeau reports positive Preliminary Economic Assessment of Scott Zinc-Copper Deposit in Quebec

MONTRÉAL, QUÉBEC--(Marketwired - Nov. 20, 2017) - Yorbeau Resources Inc. (TSX:YRB) (the "Company" or "Yorbeau") is pleased to announce results of a Preliminary Economic Assessment ("PEA") prepared by Normand Lécuyer, P.Eng. and Jeff Sepp P.Eng. of Roscoe Postle Associates Inc. ("RPA").

Under the base case PEA the Scott mineralized material is fed to a new 2,500 tonne-per-day concentrator plant located at the mine site. Results indicate positive economics with a pre-production capital expenditure of $215 million, a net pre-tax cash flow of $516 million, an Internal Rate of Return ("IRR") of 16.5%, a pre-tax Net Present Value ("NPV") of $144 million at an 8% discount rate, and a mine life of 15 years. Tables 1, 2 and 3 show summaries of LOM estimated project capital costs and operating costs for the base case scenario.

Table 1: Scott Project Preliminary Economic Assessment Highlights:

(based on US$1.30/lb Zn, US$3.50/lb Cu, US$23/oz Ag, US$1500/oz Au and Canadian dollar exchange rate of US$0.80) - all values in Canadian $'s unless noted otherwise)

		Base Case: All Ramp Scenario with New Concentrator at Mine Site
Net Cash Flow		- Pre-tax Net Cash Flow of $515.8 million
IRR		- Pre-tax IRR of 16.5% with a 6-year payback
NPV		- Pre-tax NPV(8%) of $144.0 million
Operating Costs		- Life of mine ("LOM") Opex Costs of $89.02/tonne mined (includes mining, milling, G&A and Environmental)
Capex		- Pre-production capital of $215.47 million, - Sustaining capital cost of $113.2 million
Production (Payable)		Average peak annual payable production - Zinc (years 9 - 12) : 75 million lbs. Zn in 72,405 t of concentrate - Copper (years 5 - 8) : 15 million lbs. Cu in 28,467 t of concentrate - Silver (years 5 - 8) : 395,835 oz in Cu concentrate
Mine Life		- Planned mine life of 15 years
LOM Mill Feed		- Estimated Plant Feed of 12,024,000 tonnes grading 4.14% Zn, 0.81% Cu, 26.59 g/t Ag and 0.24 g/t Au over LOM
Mill Recoveries		Average LOM recoveries : Zn: 87%, Cu : 85%