Minor Source Rule: An Air Quality Rule for Equipment at Your Business [Part C] (open access)

Minor Source Rule: An Air Quality Rule for Equipment at Your Business [Part C]

This publication summarizes the TCEQ's record-keeping and reporting requirements under rules covering minor sources of nitrogen oxides (NOx).
Date: May 2010
Creator: Texas Commission on Environmental Quality
Object Type: Pamphlet
System: The Portal to Texas History
Minor Source Rule: An Air Quality Rule for Equipment at Your Business [Part B] (open access)

Minor Source Rule: An Air Quality Rule for Equipment at Your Business [Part B]

This publication will help you determine the emission of nitrogen oxides (NOx) from combustion devices.
Date: May 2010
Creator: Texas Commission on Environmental Quality
Object Type: Pamphlet
System: The Portal to Texas History
Minor Source Rule: An Air Quality Rule for Equipment at Your Business [Part A] (open access)

Minor Source Rule: An Air Quality Rule for Equipment at Your Business [Part A]

This publication summarizes the TCEQ's air quality rules for controlling emission of nitrogen oxides (NOx) from certain combustion sources- equipment such as boilers, process heaters, stationary engines, and turbines.
Date: May 2010
Creator: Texas Commission on Environmental Quality
Object Type: Pamphlet
System: The Portal to Texas History
Hoisting Drum (open access)

Hoisting Drum

Patent for improvements to hoisting drums for use in drilling oil, gas, and water wells, with the object being "to employ a plurality of hoisting drums upon the same shaft so that the cable may be wound partly on one drum and partly on another" (lines 73-76) such that the danger of cable cutting is decreased and the speed of operation is increased, including illustrations.
Date: May 2, 1922
Creator: Suman, John R. & Gamble, Adrian R.
Object Type: Patent
System: The Portal to Texas History