Method and apparatus for manufacturing quartz slab

1. A method comprising

supplying a first material to a first conveyor device;

supplying a second material, which is different from the first material, to a second conveyor device;

supplying the second material from the second conveyor device to the first conveyor device to cause mixing of the first material and the second material;

and wherein the first conveyor device is connected to the second conveyor device;

and further comprising moving a combination of the first conveyor device and the second conveyor device to cause a combination of the first material and the second material to be supplied to different locations of a mold.

2. The method of claim 1

wherein the first conveyor device includes a first conveyor belt;

wherein the second conveyor device includes a second conveyor belt;

wherein the first conveyor belt moves independent of the second conveyor belt; and

wherein the combination of the first conveyor device and the second conveyor device is moved independent of movement of the first conveyor belt and independent of movement of the second conveyor belt.

3. The method of claim 1

wherein the first material is supplied to the first conveyor device by being dropped onto a first conveyor belt of the first conveyor device;

wherein the second material is supplied to the second conveyor device by being dropped onto a second conveyor belt of the second conveyor device; and

wherein the combination of the first material and the second material is supplied to different locations of the mold by being dropped into the mold.

4. The method of claim 1 further comprising

controlling a speed of the first conveyor belt;

controlling a speed of the second conveyor belt; and

controlling a speed of movement of the combination of the first conveyor device and the second conveyor device.

5. The method of claim 4 further comprising

using a computer processor to control the speed of the first conveyor belt, the speed of the second conveyor belt, and the speed of movement of the combination of the first conveyor device and the second conveyor device.

6. The method of claim 1 further comprising

using a first gate device, which is connected to the first conveyor device, to control a height of the first material prior to the first material mixing with the second material; and

using a second gate device, which is connected to the second conveyor device, to control a height of the second material prior to the first material mixing with the second material.

7. The method of claim 1 wherein

the combination of the first material and the second material are supplied to different locations of the mold to form a processed slab;

wherein the processed slab comprises a major surface at least two feet wide by at least six feet long and extending perpendicularly to a slab thickness;

wherein the processed slab includes at least one vein of a combination of materials;

wherein the at least one vein extends generally lengthwise from a first edge of the processed slab to an opposing second edge;

wherein the at least one vein has a thickness equal to and parallel to the slab thickness; and

wherein the at least one vein has a combination of materials which includes at least the first material and the second material; and

wherein a ratio of the first material to the second material continuously varies over a height of the at least one vein.

8. The method of claim 1 wherein

the first material is supplied, the second material is supplied, the first material and the second material are mixed to form the combination of the first material and the second material, and the combination of the first material and the second material are supplied to different locations of the mold using a computer processor, so that the combination of the first material and the second material has a predetermined ratio of the first material to the second material as the combination of the first material and the second material is dropped into the mold.

9. The method of claim 6 further comprising

using a computer processor to control the first conveyor device, the second conveyor device, the first gate device, and the second gate device.

10. The method of claim 9 wherein

the computer processor controls a speed of a first conveyor belt of the first conveyor device, a speed of a second conveyor belt of the second conveyor device, a height of the first gate device, and a height of the second gate device.

11. The method of claim 1 wherein

using a computer processor to control contents of the combination of the first material the the second material, so that the combination of the first material and the second material has a continuously varying ratio of the first material to the second material as the combination of materials is dropped into the mold.

12. The method of claim 2 wherein

the first conveyor belt is configured to move in substantially the same direction as the second conveyor belt.

13. The method of claim 12 wherein

the combination of the first conveyor device and the second conveyor device is configured to move in a direction which is substantially perpendicular to the direction of movement of the first conveyor belt and the conveyor belt.

14. A method comprising

supplying a first material to a first conveyor device;

supplying a second material, which is different from the first material, to a second conveyor device;

mixing the first material from the first conveyor device with the second material from the second conveyor device to form a first mixture;

and moving the first mixture along a length of the opening of the mold, before supplying the first mixture to the mold through the opening of the mold; and

wherein the opening of the mold has a width, with the length of the mold being substantially greater than the width of the mold.