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Advice to Beneficial Shareholder
Company Shareholders who do not hold Common Shares in their own name ("Beneficial Shareholders") are advised that only shareholders whose names appear on the records of Superior as the registered holders of Common Shares or duly appointed proxyholders can be recognized and permitted to vote at the Company Meeting. Most Company Shareholders are non-Registered Shareholders because the Common Shares they own are not registered in their names but instead are registered in the name of a nominee, such as a brokerage firm through which they purchased the shares, a bank, trust company, trustee or administrator of self-administered RRSPs, RRIFs, RESPs and similar plans, or a clearing agency such as The Canadian Depository for Securities Limited (an "Intermediary"). If you purchased your Common Shares through a broker, you are likely an unregistered holder. In accordance with securities regulatory policy, Superior has distributed copies of the Company Meeting materials, being the Notice of Meeting, this Company Circular and the form of proxy, to all Intermediaries for distribution to Beneficial Shareholders.

NI 54-101 requires Intermediaries to forward the Company Meeting materials to Beneficial Shareholders to seek their voting instructions in advance of the Company Meeting. Common Shares held by Intermediaries can only be voted in accordance with the instructions of the Beneficial Shareholder. The Intermediaries often have their own voting instruction form, mailing procedures and provide their own return instructions. If you wish to vote by proxy, you should carefully follow the instructions from the Intermediary to ensure that your Common Shares are voted at the Company Meeting. The form of proxy supplied to a Beneficial Shareholder by its broker (or the agent of the broker) is substantially similar to the form of proxy provided directly to Registered Shareholders by Superior. However, its purpose is limited to instructing the Registered Shareholder (i.e., the broker or agent of the broker) how to vote on behalf of the Beneficial Shareholder.

If you, as a Beneficial Shareholder, wish to vote at the Company Meeting in person, you should appoint yourself as proxyholder by writing your name in the space provided on the request for voting instructions or proxy provided by the Intermediary and return the form to the Intermediary in the envelope provided. Do not complete the voting section of the form as your vote will be taken at the Company Meeting.

Voting 19. THIS COURT ORDERS that the only persons entitled to vote in person or by proxy on the Arrangement Resolution, or such other business as may be properly brought before the Meeting, shall be those Shareholders who hold Shares as of the close of business on the last trading day immediately prior to the Record Date. Illegible votes, spoiled votes, defective votes and abstentions shall be deemed to be votes not cast. Proxies that are properly signed and dated but which do not contain voting instructions shall be voted in favour of the Arrangement Resolution.