On January 28, 2020, Lt. Gen. Sittipol Nimnuan, Director- General of Thailand Mine Action Center (TMAC), Joint Operation Command and his party, visited Humanitarian Mine Action Unit (HMAU-4) particularly in the suspected and dangerous area (SHA 636 -01/AD) located in Baan Romklao, Charttrakarn district, Phitsanulok. It was reported that the activities during the visit had run smoothly.