Robert A Hard

Title: Innovations by Inventor Robert A. Hard

Introduction

Robert A. Hard, located in Still River, Massachusetts, is a prolific inventor known for his contributions to in-situ mining technology. With a total of four patents to his name, Hard has made significant strides in the efficient recovery of valuable minerals, particularly copper and nickel.

Latest Patents

One of his latest innovations is a method and apparatus for sparging gas bubbles. This invention introduces finely divided gas bubbles into a lixiviant used for in-situ mining of minerals containing metal values, such as copper. The lixiviant is supplied to a series of porous tubes made from sintered powdered metal while gas is applied under pressure around these tubes. This setup allows gas to penetrate into the interior of the tubes in the form of fine bubbles. The lixiviant then wipes these gas bubbles from the tubes, enhancing the mining process.

Another notable patent is an environmentally compatible and economically viable in-situ mining method and apparatus. This innovative approach involves using a two-phase ammoniacal leach solution that contains oxygen bubbles. Under high pressure, this solution is injected several thousand feet deep into deposits rich in copper or nickel, where it leaches the metals while navigating through cracks and fissures. The pregnant leaching solution is later withdrawn and processed for metal recovery, showcasing Hard's commitment to both efficiency and environmental safety.

Career Highlights

Robert A. Hard has been associated with Kennecott Copper Corporation, where he has utilized his expertise in mining technology to develop these innovative solutions. His work has not only added to the company's portfolio but has also advanced the field of mineral extraction.

Collaborations

Throughout his career, Hard has collaborated with notable coworkers such as Limin Hsueh and Donald H. Davidson. Together, they have contributed to the development of cutting-edge technologies that address modern mining challenges.

Conclusion

Robert A. Hard's inventive journey is marked by significant contributions to in-situ mining technology. With a focus on creating environmentally friendly and cost-effective solutions, his patents reflect his dedication to innovation in the mining industry. As he continues his work at Kennecott Copper Corporation, Hard's impact on the field of mineral extraction remains profound.