Core Viewpoint - The article discusses the tragic accident involving six students from Northeast University at the China National Gold Group's Inner Mongolia mining facility, focusing on the responses from the mining department regarding safety concerns related to the flotation process and the properties of the slurry involved in the incident [1]. Group 1: Safety Concerns - The flotation machine is designed to minimize mechanical hazards, with the motor and components structured to prevent injuries [3]. - The slurry from the Ulan Copper Molybdenum Mine has been tested multiple times and found to contain no toxic substances, with the pH maintained around 9 using an 8% lime slurry [4]. - The flotation agents used are classified as safe and environmentally friendly, with specific concentrations detailed for each agent [4][5][6][7][8]. Group 2: Slurry Temperature - The flotation process operates at normal temperatures, with no heating facilities added, and the slurry temperature has been monitored to range between 23.2°C and 31.4°C [9]. - The temperature is crucial for flotation efficiency and product quality, but the current process does not induce any significant heat, aligning with the monitored data [9].

Group 1 - A tragic incident occurred where six junior students from Northeast University fell into a flotation tank during an internship at Zhongjin Gold, resulting in their deaths [1][2] - The flotation tank is described as having a significant vertical height, making it difficult for individuals to escape once they fall in [15] - The flotation slurry contains corrosive substances and heavy metal ions, posing severe health risks upon contact, including skin burns and respiratory issues [19][23] Group 2 - The incident highlights a lack of safety measures, as the grid plate above the flotation tank was not adequately secured, despite previous safety concerns raised by students [28][30] - The company had previously announced a goal of achieving zero accidents in the flotation workshop by 2024, indicating a commitment to safety that was not reflected in practice [31] - The recent replacement of the grid plate, which should have lasted for ten years, raises questions about the quality of maintenance and inspection practices within the company [34][36] Group 3 - The incident reflects broader issues within high-risk industries, where safety protocols may be overlooked, leading to preventable tragedies [40][42] - The perception of mining and mineral processing as high-risk fields is reinforced by this incident, potentially affecting student interest and recruitment in these areas [45][46] - The company’s apparent indifference to safety concerns may suggest a troubling attitude towards the welfare of students and interns [47]