Carmeuse Lime (Canada) Limited's Friendly Offer to Acquire STT Enviro Corp. Extended to June 5, 2017 - Seite 2

The full details of the Offer are contained in Carmeuse's take-over bid circular and related Offer materials. Copies of the notice of variation, the take-over bid circular and related Offer materials, as well as STT's directors' circular, are available on STT's SEDAR profile at www.sedar.com.

Information on Depositing Your Shares

Carmeuse has engaged Computershare Investor Services Inc. to act as depositary for the Offer. Shareholders can obtain copies of the take-over bid circular and related Offer materials at no charge from the Depositary. The Depositary can be contacted within North America at 1-800-564-6253 or by email at [e-mail]. Shareholders should also contact the Depositary if they require assistance in depositing their Shares or if they have any other inquiries regarding the Offer.

About STT Enviro Corp.

STT supplies cost effective, incremental, environmental improvements to traditional industrial products. STT's two operating groups, STT Enviro Corp. Systems & Solutions and STT Enviro Corp. Tanks & Industrial, work to reduce their customers' environmental footprint, cost efficiently.

STT Systems & Solutions engineers and supplies chemical make down systems to neutralize pollutants (usually acid water) created in the ore or oil recovery process; and aftermarket services including optimization of chemical use for our customers to lower costs and reduce their carbon footprint.

STT Tanks & Industrial engineers and supplies bolted tanks with a smaller environmental footprint for both dry and liquid storage applications.

Environmental considerations are prerequisites in modern industrial expansion and STT Enviro Corp. is focused on being a leader and innovator on incremental environmental improvements.

For more information, please visit our website at www.sttenvirocorp.com.

About Carmeuse Lime (Canada) Limited

Carmeuse Lime (Canada) Limited owns and operates three lime plants and one limestone quarry in Ontario. It is part of the Carmeuse Group. Carmeuse is a leading manufacturer of lime and limestone products used to make steel stronger, air cleaner, roadways last longer, water more pure and waste reusable. Carmeuse products are diversely utilized across a wide range of industries including steel manufacturing, power generation, road construction and land development, water and wastewater treatment, pulp and paper production, and more. Carmeuse not only offers products, but also value-added services such as technical support, application support, and logistics support to optimize customer processes.