Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Mining method










Image Number 3 for United States Patent #4123109.

A tabular mineral deposit is mined by drilling overlapping holes in the plane of the deposit, the first hole being drilled in any convenient manner and each subsequent hole being drilled by a box hole type machine with a coring bit. The core breaks up and passes out of the core barrel into the orbit of vanes that transfer the broken rock into the hole being lapped. The broken rock is then removed along the hole being overlapped as by means of a drag line scraper.








 
 
  Recently Added Patents
Single-lens reflex digital camera which displays an image for live view
Zoom lens
Image forming apparatus forming images in response to image formation request from operation unit or external device
Target trading system and method
Method of measuring the flux of a soil gas
Photomask blank, photomask blank manufacturing method, and photomask manufacturing method
Method for preparing a .beta.-SiAlON phosphor
  Randomly Featured Patents
System and method for using a capacitance measurement to monitor the manufacture of a semiconductor
Handle lock
Method of line laying for mooring a platform
Telecommunication method for ensuring on-time delivery of packets containing time-sensitive data
Device for adjusting the illumination dose on a photosensitive layer
Vertical blanking status flag indicator system
Selective motion vector prediction method, motion estimation method and device thereof applicable to scalable video coding system
Method and apparatus for breaking up calculi in urinary intracavity by milling
RFID patch antenna with coplanar reference ground and floating grounds
Step silencing parquet floor