Newfield Resources Limited (Newfield) announce an operational update in relation to its Tongo Diamond Mine Development in Sierra Leone (Tongo Mine Development or Tongo). The drilling, blasting and excavation of the box cut has been completed. Five blasts were undertaken in total and some 52,000 cubic metres of blasted granite have been removed to the waste dump stockpile, where Newfield has recently established a crushing plant to produce aggregate for the mine construction. The box cut is now at the elevation required based on the geotechnical studies to ensure that the 6m x 4m portal entry for the decline to access both the Kundu and Lando kimberlites can be drilled and blasted. A consulting rock engineer has visited the site and undertaken a geotechnical study to make recommendations on the required support for the box cut and the initial development of the portal and decline to ensure a safe working environment. Procurement of capital items to support the box cut and commence the portal opening and decline development will now be made, in advance of the expected arrival of the rock drills, loaders and haul trucks in late December. 100tph Processing Plant: As part of an optimisation program following the FEED Study completed in May 2019, Newfield assessed options for potential rapid expansion of processing capacity and diamond production rates. This review included weighing a single enlarged plant design against planned refurbishment of the existing 50tph plant coupled with investment in a stand-alone 25tph processing plant at the Tongo Dyke-1 site. The outcome of this review is that it is more efficient, in both capital investment and operating terms, to implement a modular 100tph plant design from the outset of the Tongo Mine Development. Various key components of the 50tph plant can be used in the development of the 100tph plant. The aggregate capital investment with the expanded capacity is only marginally higher than the original 50tph refurbishment approach. As the expanded plant design can be implemented on a modular basis, a portion of the capital requirement is capable of being deferred to later years as mine production levels progressively increase. The detailed design of the 100tph plant has been completed and earthworks excavations for plant civils have commenced. Panguma Microdiamond Analysis Results: Two separate samples of the Panguma kimberlite, totalling 329.95kg, were collected as part of the current work program and were consigned to the SRC for caustic fusion (microdiamond analysis). Combined, these samples yielded 962 diamonds, weighing 1.69 carats. A total of 28 diamonds were classified as >0.85mm in size, with a large stone measuring 5.5mm x 4.7mm x 3.0mm (0.79carats in weight).