By using the information in above table, draw activity on arrow (AOA) network diagram, including information such as event number, earliest date, latest dated and slack.

\begin{tabular}{|l|l|l|l|} \hline Activity & Description & Immediate Predecessor & Duration (Hours) \\ \hline A & Receiving Raw Material & & 0.5 \\ \hline B & Bolt cutting & A & 1.0 \\ \hline C & Transfer machine(series of drilling \& cutting operations) & B & 1.5 \\ \hline D & Transfer machine(barrels) & B & 1.4 \\ \hline E & Barrel pinning & D & 1.2 \\ \hline F & Shackle groove cutting & B & 0.8 \\ \hline G & Shackle bending & F & 1.0 \\ \hline H & Insert shackle into body & C,G,E & 1.4 \\ \hline I & Insert barrel into body and test key set & H & 0.5 \\ \hline J & Packaging of padlock & I & 1.4 \\ \hline \end{tabular}