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	<title>Category:Bond/Barratt Model - Revision history</title>
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	<updated>2026-05-14T11:12:58Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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		<id>https://wiki.sagmilling.com/index.php?title=Category:Bond/Barratt_Model&amp;diff=506&amp;oldid=prev</id>
		<title>Alex Doll: Created page with &quot;&#039;&#039;&#039;Fred Bond&#039;&#039;&#039; was a process engineer at the Allis Chalmers company who devised a way to predict grinding specific energy consumption and mill sizes for &quot;conventional&quot; equipm...&quot;</title>
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		<updated>2013-12-05T22:05:19Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;&amp;#039;&amp;#039;&amp;#039;Fred Bond&amp;#039;&amp;#039;&amp;#039; was a process engineer at the Allis Chalmers company who devised a way to predict grinding specific energy consumption and mill sizes for &amp;quot;conventional&amp;quot; equipm...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&amp;#039;&amp;#039;&amp;#039;Fred Bond&amp;#039;&amp;#039;&amp;#039; was a process engineer at the Allis Chalmers company who devised a way to predict grinding specific energy consumption and mill sizes for &amp;quot;conventional&amp;quot; equipment (in 1940&amp;#039;s and 1950&amp;#039;s) including rod mills, ball mills and crushers. &lt;br /&gt;
&lt;br /&gt;
&amp;#039;&amp;#039;&amp;#039;Derek Barratt&amp;#039;&amp;#039;&amp;#039; is a consulting engineer who extended Bond&amp;#039;s methodology to semi-autogenous and autogenous grinding mills using calibrations to early SAG mill plants in western North America and in Chile.&lt;br /&gt;
&lt;br /&gt;
==References==&lt;br /&gt;
[[Bibliography: Specific energy consumption models]]&lt;/div&gt;</summary>
		<author><name>Alex Doll</name></author>
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