Where by virtue of this Article, the Subcontractor is required to efect and maintain insurances and / or to allow the Contractor to take out insurances in the Subcontractor's name, then at any time until such obligation has been fully performed,the Subcontractor shall produce to the Contractor's satisfactory evidences thereof in the form required by the Contractor (such as copy of cover notes) , including evidences that payment of the corresponding premiums have been made, and in the event of his failing to do so, the Contractor may himself effect such insurance and recover the cost of so doing from the Subcontractor.