HPQ Silicon Inc. has completed the GEN3 PUREVAPTM Quartz Reduction Reactor (QRR) Pilot Plant system integration validation phase. This first phase is a key milestone of the research and development program. HPQ GEN3 PUREVAPTM QRR PILOT PLANT R&D TESTING PROGRAM ADVANCING ON SCHEDULE The GEN3 PUREVAPTM QRR Pilot plant is a first-of-its-kind, prototype comprised of multiple systems that must operate under harsh conditions, extremely high temperatures and under vacuum.

With the systems integration now completed, the next milestones in PyroGenesis' meticulous approach are: Reactor start-up, a duration of about one (1) month will be allocated to this phase, Four (4) process improvement tests, a duration of about two (2) months will be allocated to this phase, and Operating the GEN3 QRR continuously, with non-stop production, during the remaining time. As with all R&D projects, particularly with new process technology, the timeline is subject to change. PyroGenesis is confident that the program will allow HPQ to validate and quantify the previously completed GEN1 and GEN2 PUREVAPTM QRR testing phase results: Produce Silicon (Si) material of higher purity than any traditional processes, in a single step, That it can do so from raw material sources without the need for extremely pure feedstock as required by conventional processes, That it only requires 4.5 MT of raw material to make 1 MT of Silicon versus the 6 MT required by conventional processes, a 25% reduction and That it can do so at a lower cost advantage versus all traditional Silicon.