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NEWFIELD RESOURCES LIMITED ASX Announcement 27 July 2021 ASX : NWF ABN : 98 153 219 848 15 McCabe St North Fremantle WA 6159 T : +08 9389 8880 www.newfieldresources.com.au JUNE 2021 QUARTERLY ACTIVITIES REPORT Newfield Resources Limited ( ASX : NWF ) ( Newfield or Company ) is pleased to announce its activities for the quarter ending 30 June 2021 . ■ ■ ■ ■ Highlights Underground development of the return airway on the Kundu kimberlite continued A total of 736 m of underground development achieved to date Construction of 25 tph plant commenced 590 Lost Time Injury free days recorded during the surface and underground construction and development activities completed at the Tongo mine 1. Tongo Diamond Mine ( Sierra Leone ) Underground Development During the quarter , the underground decline development and infrastructure construction continued in the Tongo diamond mine ( Project ) . However , the quarter was a particularly challenging one as a ' third wave ' COVID - 19 outbreaks hit both in Sierra Leone and in South Africa where the majority of the Project's mining and engineering supplies are sourced . Both countries have imposed lockdown measures which have introduced further delays to Project's progress . Despite this , a total of 736m of underground development has now been achieved . The focus of development remains the return airway ( RAW ) drive of Kundu Segment A ( towards the ventilation shaft ) , where the Kundu kimberlite was re - intersected , and on advancing a drive north towards the RAW of Segment C to allow full circulation of air through the underground workings . At this point , a further drive is now being developed to the southwest to intersect Segment B RAW ( refer to Figure 1 ) . The kimberlite dyke intersected in Segment A is approximately 25-30cm in width and is being extracted in such a way that blasting can take out mostly waste rock and then the kimberlite " scalped❞ off the side wall to control dilution ( refer to Figure 2 ) . This kimberlite has been hauled to the 5tph plant and is being processed . The Company continues to review its original mine construction schedule both in terms of the continued disruption caused by the COVID - 19 pandemic and with a clear focus on strategies to accelerate early production .