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RIO.TO ·

At the Fenix GOLD Project, Chile

Drill Results

RIO2 LIMITED DRILLS 148m @ 0.78 g/t Au AND 44m @ 1.26 g/t Au

AT THE FENIX GOLD PROJECT, CHILE

March 21, 2019 - Rio2 Limited (“Rio2” or the “Company”) (TSXV: RIO; BVL: RIO; OTCQX: RIOFF) is

pleased to announce additional drilling results from 28 reverse circulation (“RC”) drill holes and 6

surface trenches at its Fenix Gold Project located in the Maricunga region, Chile.

The drilling described in this press release represents the final 4,830 meters drilled of a 7,066 meter

drilling program that commenced in late November 2018, which focused on the US$ 728 pit shell

defined in “NI 43-101 Technical Report on the Cerro Maricunga Project Pre-Feasibility Study Atacama

Region, Chile” dated October 6, 2014 with an effective date of August 19, 2014, a copy of which

document is available on SEDAR under Rio’s SEDAR profile at www.sedar.com. The Cerro Maricunga

Project was renamed the Fenix Gold Project by Rio2 in 2018.

The results of the initial 11 RC drill holes (2,236 metres) and 4 surface trenches were released on

January 22, 2019.

The objective of this drilling program was to intersect and define east-west structural feeders that the

geologists believe are controlling the near surface higher grade mineralization. The drilling will also

serve as a check for previous drilling within the US$ 728 pit shell and assist in better defining the near

surface higher grade mineralized component of the new resource estimate which is currently planned

for completion at the end of Q1, 2019.

The total mineral proven and probable reserve estimate as outlined in the 2014 Technical Report is

294.4 million tonnes at an average grade of 0.40 g/t gold for a total of 3,743,000 gold ounces.

The Company’s geologists believe that there is a high -grade component to the resource related to

structures and breccias, which are prevalent in the deposit but have no t been defined in the current

resource estimate that has been simply constrained by a 0.15 g/ t Au grade shell without considering

geological domaining. The Company’s geologists have also resampled surface exposures of the

mineralized resource to include th is information in the revised resource estimate. Previous surface

sampling was not included in the current resource estimate despite a high proportion of samples being

above the average mineralized resource grade and the resource outcropping at surface.

Surface sampling results from the final 6 surface trenches are:

Hole_ID from to Interval (m) Au g/t

FG-T18-006 14 102 88 0.30

FG-T18-006 148 168 20 1.02

FG-T18-007 0 104 104 0.59

Including 10 48 38 1.05

FG-T18-008 0 132 132 0.57

Including 4 28 24 1.44

FG-T18-008B 0 122 122 0.30

Including 66 80 14 0.60

FG-T18-008C 56 62 6 0.23

FG-T19-009 0 76 76 0.57

Including 36 42 6 1.01

Including 50 56 6 1.01

FG-T19-010 0 100 100 0.61

Including 62 96 34 1.06

Drilling results from the final 28 RC holes are:

Hole_ID from to Interval (m) Au g/t

FG-R18-012 60 70 10 0.30

FG-R18-012 124 190 66 0.53

Including 158 164 6 1.04

Including 174 188 14 1.11

FG-R18-013 44 56 12 0.19

FG-R18-014 0 92 92 0.55

Including 18 44 26 1.02

FG-R18-014 138 164 26 0.19

FG-R18-014 208 220 12 0.19

FG-R18-015 0 22 22 0.32

FG-R18-015 78 238 160 0.68

Including 98 102 4 1.18

Including 110 140 30 1.03

Including 190 208 18 1.23

FG-R18-016 0 194 194 0.35

Including 84 100 16 0.81

Including 108 120 12 0.78

FG-R18-017 0 52 52 0.28

Including 38 46 8 0.54

FG-R18-017 174 200 26 0.37

Including 192 200 8 0.73

FG-R18-018 42 122 80 0.30

Including 102 110 8 0.67

FG-R18-019 0 148 148 0.78

Including 66 86 20 1.02

Including 112 148 36 1.66

FG-R19-020 0 6 6 0.29

FG-R19-020 16 96 80 0.32

Including 66 74 8 0.76

FG-R19-020 100 110 10 0.23

FG-R19-020 142 200 58 0.72

Including 158 186 28 1.14

FG-R19-021 2 130 128 0.32

Including 10 14 4 1.06

FG-R19-022 0 114 114 0.46

Including 66 104 38 0.69

FG-R19-023 6 100 94 0.22

FG-R19-024 0 8 8 0.21

FG-R19-024 42 118 76 0.67

Including 82 104 22 1.13

FG-R19-024 166 178 12 0.19

FG-R19-025 6 42 36 0.36

FG-R19-025 56 100 44 0.23

FG-R19-026 2 100 98 0.59

Including 26 34 8 1.03

Including 76 80 4 1.06

Including 84 88 4 1.09

Including 94 98 4 1.01

FG-R19-027 0 10 10 0.47

FG-R19-027 22 78 56 0.28

Including 38 56 18 0.44

FG-R19-027 106 114 8 0.25

FG-R19-028 0 24 24 0.18

FG-R19-028 36 52 16 0.17

FG-R19-029 54 100 46 0.41

Including 92 100 8 0.93

FG-R19-030 44 68 24 0.36

FG-R19-031 8 24 16 0.19

FG-R19-031 86 160 74 0.26

Including 88 96 8 0.51

FG-R19-032 88 180 92 0.36

Including 96 110 14 0.76

FG-R19-033 0 42 42 0.66

FG-R19-033 66 110 44 1.26

FG-R19-034 0 10 10 0.30

FG-R19-034 66 230 164 0.45

Including 146 162 16 1.06

Including 194 206 12 1.06

FG-R19-035 6 34 28 0.16

FG-R19-035 44 156 112 0.34

FG-R19-036 40 242 202 0.31

Including 164 192 28 0.68

FG-R19-037 20 30 10 0.21

FG-R19-037 60 112 52 0.41

Including 70 82 12 0.84

FG-R19-038 0 230 230 0.46

Including 64 80 16 0.74

Including 190 214 24 0.95

FG-R19-039 20 42 22 0.17

FG-R19-039 94 110 16 0.20

Results have been reported above 0.15 g/t Au, with a maximum length of internal waste of 8 metres.

All grades are uncut. A plan of the drilling and surface sampling related to this latest round of work is

attached.

Previous drilling conducted on the project occurred over several campaigns from 2010 to 2013. During

these drilling campaigns, a total of 108,482 meters was drilled with 28% of the holes b eing diamond

drill holes and 72% of the holes being reverse circulation. Results obtained from these past drilling

campaigns are archived in the News section of the Company’s website.

Enrique Garay, Senior Vice President – Geology, of Rio2, stated, “A part from the drilling recently

completed at the Fenix Gold Project, our geologists have been busy over the past 8 months, re-logging

all the previously drilled diamond core and approximately 21,000 meters of RC drilling whilst also

completing a detailed surface mapping program to allow the Company to build a simple and concise

3D geological model as a basis for our new resource estimate. Rio2 also engaged world renowned

epithermal and structural geologist, Greg Corbett, to provide expert advice in respect to the building

of the new geological model.”

Rio2 plans to provide a project update shortly to outline its work program for Q2, 2019, which will

include updating the resource model for the Fenix Gold Project and other related activities.

Sampling of the reverse circulation drilling, surface sampling and sample preparation were performed

by Rio2 personnel. In the case of the drilling, samples were taken every 2m and split in half to yield

seven to ten kilogram samples. Drill sample recovery was generally in excess of 90%. In the case of the

surface sampling, the trench -channel samples are taken on the side slope of the drill access roads.

Each sample is taken in channels of 10 cm wide by 10 cm deep by 2 meters long. The channels are

continuous and sub -horizontal. The beginning and the end of each channel is surveyed. A 15 to 20

kilogram sample is taken from each channel, which is then split in half. One of the sample halves,

being approximately 7 to 10 kilograms, is then sent to the lab for testing. Rio2 has a rigorous QA/QC

program over the chain-of-custody of samples and the insertion of 4% blanks, 5% duplicates, and 5%

certified reference standards in each batch of samples. Samples are shipped to ALS preparation

laboratory located in Copiapo where they are dried, crushed, and pulverized; then ALS ship the pulp

to its lab in Lima in order to be assayed. All gold assays were obtained by standard 50g fire assaying

with AA finish. ALS is an ISO 9001:2000 certified laboratory.

Mr. Enrique Garay, MSc. P.Geo (AIG Member), Senior Vice President - Geology of Rio2, is the Qualified

Person (as defined by NI 43-101) responsible for managing the Company's exploration programs and

disclosure of drilling results. Mr. Garay has read and approved the scientific and technical information

in this news release.

Forward-Looking Statements

Certain statements contained herein constitute forward-looking statements, most particularly the

potential to increase the resource estimate of the gold oxide mineralization at the Fenix Gold Project,

and the completion of an updated resource estimate for the gold oxide mineralization at the Fenix Gold

Project. All statements included herein, other than statements of historical fact, are forward-looking

information and such information involves various risks and uncertainties. Rio2 believes the

expectations reflected in these forward-looking statements are reasonable, but no assurance can be

given that these expectations will prove to be correct and such forward-looking statements in this news

release should not be unduly relied upon. A description of assumptions used to develop such forward-

looking information and a description of risk factors that may cause actual results to differ materially

from forward-looking information can be found in Rio2's disclosure documents on the SEDAR website

at www.sedar.com. Forward-looking statements included in this news release are made as of the date

of this news release and Rio2 disclaims any intention or obligation to update or revise any forward-

looking statements, whether as a result of new information, future events or otherwise, except as

expressly required by applicable securities legislation.

To learn more about Rio2 Limited, please visit: www.rio2.com or Rio2's SEDAR profile at

www.sedar.com.

ON BEHALF OF THE BOARD OF RIO2 LIMITED

Alex Black

President and Chief Executive Officer

Email: [email protected]

Telephone: +1 (604) 260 2696

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the

policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this

release.

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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

FG-R18-001

FG-R18-002

FG-R18-003

FG-R18-004

FG-R18-005

FG-R18-006

FG-R18-007

FG-R18-008

FG-R18-009

FG-R18-010

FG-R18-011

FG-R18-012

FG-R18-013

FG-R18-014

FG-R18-015

FG-R18-016

FG-R18-017

FG-R18-018

FG-R18-019FG-R19-020

FG-R19-021

FG-R19-022

FG-R19-023

FG-R19-024

FG-R19-025

FG-R19-026

FG-R19-027

FG-R19-028

FG-R19-029

FG-R19-030

FG-R19-031

FG-R19-032

FG-R19-033

FG-R19-034

FG-R19-035

FG-R19-036

FG-R19-037

FG-R19-038

FG-R19-039

479000

479000

480000

480000

7013000

7013000

±

0 500250

Meters

LEGEND

Others

PFS Pit Shell 1300

PFS Pit Shell 728

FG-T18-001 FG-T18-002

FG-T18-003

FG-T18-008B

FG-T18-007

FG-T19-009

FG-T18-004

FG-T19-010

FG-T18-006

FG-T18-008C

FG-T18-008

FG-T

18-005

Historical Drill Holes0

Drillhole

g/t Au

0.15 - 0.30

0.30 - 0.50

0.50 - 1

> 1

0

0.00 - 0.15

Trench Sampling

g/t Au

0.00 - 0.15

0.15 - 0.30

0.30 - 0.50

0.50 - 1.00

< 1.00

!

!

!

!

!

DRILLING PROGRAM

RESULTS 2019