&lt;a href=&quot;http://www.istockphoto.com/file_closeup/object/2629368.php?id=2629368&amp;refnum=jwilkinson&quot; target=&quot;istock&quot;&gt;Slates ready for roofing&lt;/a&gt;&lt;br&gt;a stack of purple and grey roofing slates (slate shingles) in a wooden slatted crate ready to be installed on a roof. &lt;br&gt;&lt;br&gt;See also: &lt;br&gt;&lt;a href=http://www.istockphoto.com/file_closeup.php?id=2407088&gt;&lt;img border=0 src='http://www.istockphoto.com/file_thumbview_approve.php?size=1&amp;amp;id=2407088'&gt;&lt;/a&gt; &lt;a href=http://www.istockphoto.com/file_closeup.php?id=2407149&gt;&lt;img border=0 src='http://www.istockphoto.com/file_thumbview_approve.php?size=1&amp;amp;id=2407149'&gt;&lt;/a&gt; &lt;br&gt;