Jan 30 (Reuters) - Potash Ridge Corp PRK.TO :
* Potash Ridge -signed 5 year agreement with North American supplier for 100 pct of co's sulphuric acid requirements for valleyfield project in Valleyfield, Quebec
* Potash Ridge Corp says five-year agreement is effective upon commencement of Valleyfield's operations
* Potash Ridge -construction is scheduled to start in early 2017, with commissioning anticipated nine to twelve months after construction start-up Source text for Eikon: ID:nMKWv0dQLa Further company coverage: PRK.TO