Abstract: Systems, methods and apparatus are provided for crushing rock. In some embodiments a toggle feature of a jaw crusher is in tension during operation. In some embodiments a lower portion of the moveable jaw moves simultaneously moves closer to the stationary jaw and forward along said first direction. In some embodiments, a direction along which material moves between the moveable and stationary jaws is closer to horizontal than vertical.

Abstract: Various embodiments of horizontal shaft impact (“HSI”) crusher systems, methods and apparatus are disclosed herein. Some HSI crusher embodiments are provided an adjustable feed angle. Some HSI crusher embodiments are provided with an adjustable curtain position.

Abstract: A controlled delivery system, method, and article of manufacture that includes a network module, configured to access a network; a storage module, configured to store data; a data publishing module in communication with the network module and storage module, configured to enable a data provider to upload and select a first and second condition; a permission module, configured to provide access to the system upon satisfaction of a first condition and delivery of a data set upon satisfaction of a second condition. The second condition may be a selected data receiver class, or a plurality of conditions configured to control delivery of data sets. The system also comprises a receiving module including a condition satisfaction module, configured to enable a data receiver to satisfy a second condition; a facilitating module notifies a data receiver of a first data set.