Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 6159726 | Method of biotreatment for solid materials in a nonstirred surface bioreactor A method of biotreating a solid material to remove an undesired compound using a nonstirred surface bioreactor is provided. According to the method the surface of a plurality of coarse substrates is coated with a solid material to be biotreated to form a ... | 12/12/2000 |
| 6146444 | Method for recovering metal value from concentrates of sulfide minerals A method of recovering precious metal values from refractory sulfide ores is provided. The method includes the steps of separating clays and fines from a crushed refractory sulfide ore, forming a heap from the refractory sulfide ore, producing a concentra... | 11/14/2000 |
| 6107065 | Nonstirred bioreactor for processing refractory sulfide concentrates and method for operating same A method of biooxidizing sulfide minerals in a nonstirred bioreactor is provided. According to the disclosed method, a concentrate of sulfide minerals is coated onto a plurality of substrates, such as coarse ore particles, lava rock, gravel or rock contai... | 08/22/2000 |
| 6086656 | Method for improving the heap biooxidation rate of refractory sulfide ore particles that are biooxidized using recycled bioleachate solution A method for improving the heap biooxidation rate of refractory sulfide ore particles that are at least partially biooxidized using a recycled bioleachate off solution is provided. The method includes the steps of biooxidizing a heap of refractory sulfide... | 07/11/2000 |
| 6083730 | Nonstirred bioreactor for processing refractory sulfide concentrates and method for operating same A method of biooxidizing sulfide minerals in a nonstirred bioreactor is provided. According to the disclosed method, a concentrate of sulfide minerals is coated onto a substrate, such as coarse ore particles, lava rock, gravel or rock containing mineral c... | 07/04/2000 |
| 5800593 | Method for rendering refractory sulfide ores more susceptible to biooxidation A method of recovering precious metal values from refractory sulfide ores is provided. The method includes the steps of separating clays and fines from a crushed refractory sulfide ore, forming a heap from the refractory sulfide ore, bioleaching the heap ... | 09/01/1998 |
| 5792235 | Method for recovering gold and other precious metals from carbonaceous ores A method for recovering precious metals from carbonaceous ore comprising leaching the ore with a lixiviant solution and then preg-robbingly concentrating the precious metal-lixiviant complexes in solution on to the native carbonaceous component of the ore... | 08/11/1998 |
| 5779762 | Method for improving the heap biooxidation rate of refractory sulfide ore particles that are biooxidized using recycled bioleachate solution A method for improving the heap biooxidation rate of refractory sulfide ore particles that are at least partially biooxidized using a recycled bioleachate off solution is provided. The method includes the steps of biooxidizing a heap of refractory sulfide... | 07/14/1998 |
| 5766930 | Method of biotreatment for solid materials in a nonstirred surface bioreactor A method of biotreating a solid material to remove an undesired compound using a nonstirred surface bioreactor is provided. According to the method the surface of a plurality of coarse substrates is coated with a solid material to be biotreated to form a ... | 06/16/1998 |
| 5688304 | Method for improving the heap biooxidation rate of refractory sulfide ore particles that are biooxidized using recycled bioleachate solution A method for improving the heap biooxidation rate of refractory sulfide ore particles that are at least partially biooxidized using a recycled bioleachate off solution is provided. The method includes the steps of biooxidizing a heap of refractory sulfide... | 11/18/1997 |
| 5676733 | Method for recovering metal values from concentrates of sulfide minerals A method of recovering precious metal values from refractory sulfide ores is provided. The method includes the steps of separating clays and fines from a crushed refractory sulfide ore, forming a heap from the refractory sulfide ore, producing a concentra... | 10/14/1997 |
| 5626647 | Method for recovering gold and other precious metals from carbonaceous ores A method for recovering precious metals from carbonaceous ore comprising leaching the ore with a lixiviant solution and then preg-robbingly concentrating the precious metal-lixiviant complexes in solution on to the native carbonaceous component of the ore... | 05/06/1997 |
| 5611839 | Method for rendering refractory sulfide ores more susceptible to biooxidation A method of recovering precious metal values from refractory sulfide ores is provided. The method includes the steps of separating clays and fines from a crushed refractory sulfide ore, forming a heap from the refractory sulfide ore, bioleaching the heap ... | 03/18/1997 |
| 5573575 | Method for rendering refractory sulfide ores more susceptible to biooxidation A method of recovering precious metal values from refractory sulfide ores is provided. The method includes the steps of separating clays and fines from a crushed refractory sulfide ore, forming a heap from the refractory sulfide ore, producing a concentra... | 11/12/1996 |
| 5431717 | Method for rendering refractory sulfide ores more susceptible to biooxidation A method of recovering precious metal values from refractory sulfide ores is provided. The method includes the steps of separating clays and fines from a crushed refractory sulfide ore, forming a heap from the refractory sulfide ore, bioleaching the heap ... | 07/11/1995 |
| 5378437 | Processes to recover and reconcentrate gold from its ores A variety of processes for recovering gold from gold ore are disclosed. Briefly, the methods include culturing at least one microorganism species capable of producing cyanide ion under conditions wherein the microorganism produces cyanide ion, thus formin... | 01/03/1995 |
| 5364453 | Method for recovering gold and other precious metals from carbonaceous ores A method for recovering precious metals from carbonaceous ore comprising leaching the ore with a lixiviant solution and then preg-robbingly concentrating the precious metal-lixiviant complexes in solution on to the native carbonaceous component of the ore... | 11/15/1994 |
| 5338338 | Method for recovering gold and other precious metals from carbonaceous ores A method for recovering precious metals from carbonaceous ore comprising leaching the ore with a lixiviant solution and then preg-robbingly concentrating the precious metal-lixiviant complexes in solution on to the native carbonaceous component of the ore... | 08/16/1994 |
| 5290526 | Processes to recover and reconcentrate gold from its ores A variety of processes for recovering gold from gold ore are disclosed. Briefly, the methods include culturing at least one microorganism species capable of producing cyanide ion under conditions wherein the microorganism produces cyanide ion, thus formin... | 03/01/1994 |
