VIA ELECTRONIC TRANSMISSION
January 29, 2018
TO ALL APPLICABLE EXCHANGES AND COMMISSIONS:
| RE: | AVALON ADVANCED MATERIALS INC |
We are pleased to confirm that copies of the following proxy-related materials were mailed on January 19, 2018 to the registered shareholders and the Non-Objecting Beneficial Owners ("NOBO"):
| 1 | Proxy with Notice-and-Access Notice and Request for Financial Statements - Registered Shareholders | |
| 2 | Voting Instruction Form with Notice-and-Access Notice and Request for Financial Statements - NOBOs | |
| 3 | President Letter - Registered and NOBOs Requesting Full Package | |
| 4 | Notice of Meeting and Management Information Circular (including Financial Statements and Management Discussion and Analysis - Registered Shareholders | |
| 5 | Notice of Meeting and Management Information Circular - NOBOs Requesting Full Package | |
| 6 | Non-Postage Return Envelope |
Yours truly,
TSX Trust Company
''Lori Winchester''
Senior Relationship Manager
Lori.Winchester@tmx.com
| 301 - 100 Adelaide Street West, Toronto, Ontario, M5H 4H1 | www.tsxtrust.com |