OM Holdings Limited updated on the 100% owned Bootu Creek Manganese Mine is located 110km north of Tennant Creek in the Northern Territory, Australia. A total of 1.82 million tonnes at 21.94% Mn of Mineral Resource were depleted by mining and 0.51 million tonnes of Secondary Process Plant (SPP) ore stockpiles were depleted by processing during the 12 months to 31 December 2018. A total of 1.82 million tonnes at 21.94% Mn of Mineral Resource were depleted by mining and 0.51 million tonnes of SPP ore stockpiles were depleted by processing during the 12 months to 31 December 2018. In addition, other significant components of the Mineral Resource reduction included 0.44 million tonnes of low grade SPP ore stockpiles and 2.40 million tonnes of Mineral Resource blocks which had extended beneath the most current Life of Mine (LOM) pit designs. However recent mining activity at or below the base of weathering has returned lower yield and product grades due to the less favourable beneficiation characteristics of unweathered ores. Remaining Mineral Resources and Ore Reserves have been critically assessed on an individual pit by pit basis for acceptable processing characteristics. The Measured and Indicated Mineral Resource blocks are now limited in extent by the remaining LOM pit designs used in the 31 December 2018 Ore Reserve. The Bootu Creek Mineral Resource and Ore Reserve estimates have been completed in accordance with the JORC Code (2012 edition). The 2.94 million tonne reduction in the 31 December 2018 Ore Reserve resulted from the 1.82 million tonnes mined, 0.51 million tonnes of SPP ore stockpiles processed during 2018, 0.44 million tonnes depleted from the low grade SPP ore stockpiles and a net reduction of 0.17 million tonnes based on the LOM pit designs used in the Ore Reserve. At the current annual production rate of 800,000 tonnes per annum, the ore reserve is expected to be depleted by early 2021. Reprocessing of Bootu Creek tailings and rejects from the Heavy Media Separation (HMS) is expected to commence early in third quarter 2019 following completion of the TRP currently under construction. Given the significant stockpiles of lower grade ore, plant tailings and HMS reject material, the TRP is expected to produce approximately 250,000 tonnes of manganese fines per annum with an average grade of 35% to 38% Mn for 6 to 8 years once fully commissioned. Exploration in 2018 was limited to two small Reverse Circulation (RC) drill programs consisting of a 5 hole (354m) infill program which successfully extended the depth of the Ore Reserve at the northern end of the Chugga Far North deposit, and a 11 hole (906m) infill program delineating a shallow manganese prospect located northwest of the Masai deposit (now included as an Inferred Mineral Resource). A preliminary feasibility study of the Renner West deposit, including metallurgical testwork, is budgeted for 2019 with a view to upgrading this Mineral Resource block to Ore Reserve status. The Renner West Mineral Resource is located 70km to the northwest of Bootu Creek. Exploration RC drilling is also planned to evaluate several adjacent, untested geophysical anomalies.