diff --git a/Classes/PHPExcel/IOFactory.php b/Classes/PHPExcel/IOFactory.php
index 8b92bf5..f7a6d0a 100644
--- a/Classes/PHPExcel/IOFactory.php
+++ b/Classes/PHPExcel/IOFactory.php
@@ -75,6 +75,7 @@ class PHPExcel_IOFactory
 		'Excel2003XML',
 		'OOCalc',
 		'SYLK',
+		'Gnumeric',
 		'Serialized',
 		'CSV',
 	);
@@ -247,6 +248,9 @@ class PHPExcel_IOFactory
 				case 'xml':
 					$reader = self::createReader('Excel2003XML');
 					break;
+				case 'gnumeric':
+					$reader = self::createReader('Gnumeric');
+					break;
 				case 'csv':
 					// Do nothing
 					// We must not try to use CSV reader since it loads
diff --git a/Classes/PHPExcel/Reader/Gnumeric.php b/Classes/PHPExcel/Reader/Gnumeric.php
new file mode 100644
index 0000000..e0bb94a
--- /dev/null
+++ b/Classes/PHPExcel/Reader/Gnumeric.php
@@ -0,0 +1,428 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2010 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Reader
+ * @copyright  Copyright (c) 2006 - 2010 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+
+/** PHPExcel root directory */
+if (!defined('PHPEXCEL_ROOT')) {
+	/**
+	 * @ignore
+	 */
+	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
+	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
+	PHPExcel_Autoloader::Register();
+	PHPExcel_Shared_ZipStreamWrapper::register();
+	// check mbstring.func_overload
+	if (ini_get('mbstring.func_overload') & 2) {
+		throw new Exception('Multibyte function overloading in PHP must be disabled for string functions (2).');
+	}
+}
+
+/**
+ * PHPExcel_Reader_Gnumeric
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Reader
+ * @copyright  Copyright (c) 2006 - 2010 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Reader_Gnumeric implements PHPExcel_Reader_IReader
+{
+	/**
+	 * Read data only?
+	 *
+	 * @var boolean
+	 */
+	private $_readDataOnly = false;
+
+	/**
+	 * Restict which sheets should be loaded?
+	 *
+	 * @var array
+	 */
+	private $_loadSheetsOnly = null;
+
+	/**
+	 * Sheet index to read
+	 *
+	 * @var int
+	 */
+	private $_sheetIndex;
+
+	/**
+	 * Formats
+	 *
+	 * @var array
+	 */
+	private $_styles = array();
+
+	/**
+	 * Shared Expressions
+	 *
+	 * @var array
+	 */
+	private $_expressions = array();
+
+	private $_referenceHelper = null;
+
+	/**
+	 * PHPExcel_Reader_IReadFilter instance
+	 *
+	 * @var PHPExcel_Reader_IReadFilter
+	 */
+	private $_readFilter = null;
+
+
+	/**
+	 * Read data only?
+	 *
+	 * @return boolean
+	 */
+	public function getReadDataOnly() {
+		return $this->_readDataOnly;
+	}
+
+	/**
+	 * Set read data only
+	 *
+	 * @param boolean $pValue
+	 * @return PHPExcel_Reader_Gnumeric
+	 */
+	public function setReadDataOnly($pValue = false) {
+		$this->_readDataOnly = $pValue;
+		return $this;
+	}
+
+	/**
+	 * Get which sheets to load
+	 *
+	 * @return mixed
+	 */
+	public function getLoadSheetsOnly()
+	{
+		return $this->_loadSheetsOnly;
+	}
+
+	/**
+	 * Set which sheets to load
+	 *
+	 * @param mixed $value
+	 * @return PHPExcel_Reader_Gnumeric
+	 */
+	public function setLoadSheetsOnly($value = null)
+	{
+		$this->_loadSheetsOnly = is_array($value) ?
+			$value : array($value);
+		return $this;
+	}
+
+	/**
+	 * Set all sheets to load
+	 *
+	 * @return PHPExcel_Reader_Gnumeric
+	 */
+	public function setLoadAllSheets()
+	{
+		$this->_loadSheetsOnly = null;
+		return $this;
+	}
+
+	/**
+	 * Read filter
+	 *
+	 * @return PHPExcel_Reader_IReadFilter
+	 */
+	public function getReadFilter() {
+		return $this->_readFilter;
+	}
+
+	/**
+	 * Set read filter
+	 *
+	 * @param PHPExcel_Reader_IReadFilter $pValue
+	 * @return PHPExcel_Reader_Gnumeric
+	 */
+	public function setReadFilter(PHPExcel_Reader_IReadFilter $pValue) {
+		$this->_readFilter = $pValue;
+		return $this;
+	}
+
+	/**
+	 * Create a new PHPExcel_Reader_Gnumeric
+	 */
+	public function __construct() {
+		$this->_sheetIndex 	= 0;
+		$this->_readFilter 	= new PHPExcel_Reader_DefaultReadFilter();
+		$this->_referenceHelper = PHPExcel_ReferenceHelper::getInstance();
+	}
+
+	/**
+	 * Can the current PHPExcel_Reader_IReader read the file?
+	 *
+	 * @param 	string 		$pFileName
+	 * @return 	boolean
+	 */
+	public function canRead($pFilename)
+	{
+		// Check if zip class exists
+		if (!function_exists('gzread')) {
+			return false;
+		}
+
+		// Check if file exists
+		if (!file_exists($pFilename)) {
+			throw new Exception("Could not open " . $pFilename . " for reading! File does not exist.");
+		}
+
+		return true;
+	}
+
+	/**
+	 * Loads PHPExcel from file
+	 *
+	 * @param 	string 		$pFilename
+	 * @return 	PHPExcel
+	 * @throws 	Exception
+	 */
+	public function load($pFilename)
+	{
+		// Create new PHPExcel
+		$objPHPExcel = new PHPExcel();
+
+		// Load into this instance
+		return $this->loadIntoExisting($pFilename, $objPHPExcel);
+	}
+
+	private static function identifyFixedStyleValue($styleList,&$styleAttributeValue) {
+		$styleAttributeValue = strtolower($styleAttributeValue);
+		foreach($styleList as $style) {
+			if ($styleAttributeValue == strtolower($style)) {
+				$styleAttributeValue = $style;
+				return true;
+			}
+		}
+		return false;
+	}
+
+	private function _gzfileGetContents($filename) {
+		$file = @gzopen($filename, 'rb');
+		if ($file !== false) {
+			$data = '';
+			while (!gzeof($file)) {
+				$data .= gzread($file, 1024);
+			}
+			gzclose($file);
+		}
+		return $data;
+	}
+
+	/**
+	 * Loads PHPExcel from file into PHPExcel instance
+	 *
+	 * @param 	string 		$pFilename
+	 * @param	PHPExcel	$objPHPExcel
+	 * @return 	PHPExcel
+	 * @throws 	Exception
+	 */
+	public function loadIntoExisting($pFilename, PHPExcel $objPHPExcel)
+	{
+		// Check if file exists
+		if (!file_exists($pFilename)) {
+			throw new Exception("Could not open " . $pFilename . " for reading! File does not exist.");
+		}
+
+		$timezoneObj = new DateTimeZone('Europe/London');
+		$GMT = new DateTimeZone('UTC');
+
+		$gFileData = $this->_gzfileGetContents($pFilename);
+
+//		echo '<pre>';
+//		echo htmlentities($gFileData);
+//		echo '</pre><hr />';
+//
+		$xml = simplexml_load_string($gFileData);
+		$namespacesMeta = $xml->getNamespaces(true);
+
+//		var_dump($namespacesMeta);
+//
+		$gnmXML = $xml->children($namespacesMeta['gnm']);
+
+		$officeXML = $xml->children($namespacesMeta['office']);
+	    $officeDocXML = $officeXML->{'document-meta'};
+		$officeDocMetaXML = $officeDocXML->meta;
+
+		$docProps = $objPHPExcel->getProperties();
+
+		foreach($officeDocMetaXML as $officePropertyData) {
+
+			$officePropertyDC = array();
+			if (isset($namespacesMeta['dc'])) {
+				$officePropertyDC = $officePropertyData->children($namespacesMeta['dc']);
+			}
+			foreach($officePropertyDC as $propertyName => $propertyValue) {
+				$propertyValue = (string) $propertyValue;
+				switch ($propertyName) {
+					case 'title' :
+							$docProps->setTitle(trim($propertyValue));
+							break;
+					case 'subject' :
+							$docProps->setSubject(trim($propertyValue));
+							break;
+					case 'creator' :
+							$docProps->setCreator(trim($propertyValue));
+							break;
+					case 'date' :
+							$creationDate = strtotime(trim($propertyValue));
+							$docProps->setCreated($creationDate);
+							break;
+					case 'description' :
+							$docProps->setDescription(trim($propertyValue));
+							break;
+				}
+			}
+			$officePropertyMeta = array();
+			if (isset($namespacesMeta['meta'])) {
+				$officePropertyMeta = $officePropertyData->children($namespacesMeta['meta']);
+			}
+			foreach($officePropertyMeta as $propertyName => $propertyValue) {
+				$attributes = $propertyValue->attributes($namespacesMeta['meta']);
+				$propertyValue = (string) $propertyValue;
+				switch ($propertyName) {
+					case 'keyword' :
+							$docProps->setKeywords(trim($propertyValue));
+							break;
+					case 'initial-creator' :
+							$docProps->setCreator(trim($propertyValue));
+							break;
+					case 'creation-date' :
+							$creationDate = strtotime(trim($propertyValue));
+							$docProps->setCreated($creationDate);
+							break;
+					case 'user-defined' :
+							list(,$attrName) = explode(':',$attributes['name']);
+							switch ($attrName) {
+								case 'publisher' :
+										$docProps->setCompany(trim($propertyValue));
+										break;
+								case 'category' :
+										$docProps->setCategory(trim($propertyValue));
+										break;
+								case 'manager' :
+										$docProps->setManager(trim($propertyValue));
+										break;
+							}
+							break;
+				}
+			}
+		}
+
+
+		$worksheetID = 0;
+		foreach($gnmXML->Sheets->Sheet as $sheet) {
+			$worksheetName = (string) $sheet->Name;
+//			echo '<b>Worksheet: ',$worksheetName,'</b><br />';
+			if ((isset($this->_loadSheetsOnly)) && (!in_array($worksheetName, $this->_loadSheetsOnly))) {
+				continue;
+			}
+
+			// Create new Worksheet
+			$objPHPExcel->createSheet();
+			$objPHPExcel->setActiveSheetIndex($worksheetID);
+			$objPHPExcel->getActiveSheet()->setTitle($worksheetName);
+
+			foreach($sheet->Cells->Cell as $cell) {
+				$cellAttributes = $cell->attributes();
+				$row = (string) $cellAttributes->Row + 1;
+				$column = PHPExcel_Cell::stringFromColumnIndex($cellAttributes->Col);
+				$ValueType = $cellAttributes->ValueType;
+				$ExprID = (string) $cellAttributes->ExprID;
+//				echo 'Cell ',$column,$row,'<br />';
+//				echo 'Type is ',$ValueType,'<br />';
+//				echo 'Value is ',$cell,'<br />';
+				$type = PHPExcel_Cell_DataType::TYPE_FORMULA;
+				if ($ExprID > '') {
+					if (((string) $cell) > '') {
+
+						$this->_expressions[$ExprID] = array( 'column'	=> $cellAttributes->Col,
+															  'row'		=> $cellAttributes->Row,
+															  'formula'	=> (string) $cell
+															);
+//						echo 'NEW EXPRESSION ',$ExprID,'<br />';
+					} else {
+						$expression = $this->_expressions[$ExprID];
+
+						$cell = $this->_referenceHelper->updateFormulaReferences( $expression['formula'],
+																				  'A1',
+																				  $cellAttributes->Col - $expression['column'],
+																				  $cellAttributes->Row - $expression['row'],
+																				  $worksheetName
+																				);
+//						echo 'SHARED EXPRESSION ',$ExprID,'<br />';
+//						echo 'New Value is ',$cell,'<br />';
+					}
+				}
+				switch($ValueType) {
+					case '20' :
+						$type = PHPExcel_Cell_DataType::TYPE_BOOL;
+						$cell = ($cell == 'TRUE') ? True : False;
+						break;
+					case '40' :
+						$type = PHPExcel_Cell_DataType::TYPE_NUMERIC;
+						break;
+					case '60' :
+						$type = PHPExcel_Cell_DataType::TYPE_STRING;
+						break;
+				}
+				$objPHPExcel->getActiveSheet()->getCell($column.$row)->setValueExplicit($cell,$type);
+			}
+
+			$worksheetID++;
+		}
+
+
+		// Return
+		return $objPHPExcel;
+	}
+
+	/**
+	 * Get sheet index
+	 *
+	 * @return int
+	 */
+	public function getSheetIndex() {
+		return $this->_sheetIndex;
+	}
+
+	/**
+	 * Set sheet index
+	 *
+	 * @param	int		$pValue		Sheet index
+	 * @return PHPExcel_Reader_Gnumeric
+	 */
+	public function setSheetIndex($pValue = 0) {
+		$this->_sheetIndex = $pValue;
+		return $this;
+	}
+}
diff --git a/changelog.txt b/changelog.txt
index 3da0031..fa2f94c 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -24,8 +24,10 @@
 
 
 Fixed in SVN:
-- Bugfix:   (Progi1984) Workitem 7895 - Excel5 : Formula : Percent
+- Feature:  (MBaker) Work item 8769 - Implement Gnumeric File Format
+                                      Initial work on Gnumeric Reader (Worksheet Data and basic Document Properties)
 - Feature:  (MBaker) Support for Extended Workbook Properties in Excel2007, Excel5 and OOCalc Readers; support for User-defined Workbook Properties in Excel2007 and OOCalc Readers
+- Bugfix:   (Progi1984) Workitem 7895 - Excel5 : Formula : Percent
 - Bugfix:   (MB) Work item 14143 - NA() doesn't propagate in matrix calc - quick fix in JAMA/Matrix.php
 - Bugfix:   (Progi1984) Workitem 7895 - Excel5 : Formula : Error constant
 - Bugfix:   (Progi1984) Workitem 7895 - Excel5 : Formula : Concatenation operator