NI 43-101 Global Resource Estimate
|Rockcliff Metals Corporation - Global Resources - February 1, 2022|
|Category||Deposit||Tonnes ('000t)||Cu (%)||Zn (%)||Au (gpt)||Ag (gpt)||CuEq (%)||CuEq (Mlbs)|
|Measured and Indicated||Tower||1,711||3.28||1.04||0.70||16.50||4.22||159|
|Total Measured + Indicated||7,856||2.17||2.98||0.60||11.83||3.60||623|
• The Tower and Rail Deposits resource estimates complete by A-Z Mining Professionals Limited was press released on February 1, 2022 and included into a PEA study. CIM definitions were followed. $80 copper cut-off was used with US$3.52 copper, US$1817 gold, US$1.18 zinc and US$23.75 silver (based on an 18 month moving metal price average to October 31, 2021). Copper Equivalent grades were applied using metal recoveries of 97.2% copper, 74.24% zinc, 63% gold and 63% silver. Mineral Resources are not Mineral Reserves and do not have demonstrated economic value.
• The Talbot resource report completed by P&E with an effective on February 28, 2020 and press released February 27, 2020. CIM definitions were followed, 1.5% copper cut-off was used with US$3.00 copper, US$1,350 gold, US$1.10 zinc and US$16.50 silver(based on 24 month moving average to January 31, 2020). Metal recoveries used for Copper Equivalent grades were 95%, gold at 80%, zinc at 80% and silver at 80%. Mineral Resources are not Mineral Reserves and do not have demonstrated economic value.
• The Bur resource report completed by Stantec with an effective date of October 26, 2021 was press released on November 22, 2021. CIM definitions were followed. 2.3% copper cut-off was used with US$3.26 copper, US$1,744 gold, US$ 1.13 zinc and US$22.05 silver(based on 24 month moving average to October 2021). Metal recoveries used for Copper Equivalent grades were 80%, gold at 40%, zinc at 80% and silver at 40%. Mineral Resources are not Mineral Reserves and do not have demonstrated economic value.