Eleven anti-fracking protesters have pleaded not guilty to causing disruption at an exploratory drilling site.
Three of the defendants are accused of locking themselves to a fire engine outside the site, while others are alleged to have blocked the road, Crawley Magistrates' Court heard.
Energy company Cuadrilla has spent the past few weeks looking for oil at the site in Balcombe, West Sussex, while protesters remain camped outside.
Tamsin Omond, 28, a market research executive, from London, Ian Freeston, 52, a handyman, from Lewes, East Sussex, Lu Brown, 30, a solicitor, from London, Andrew Tobert, 29, from London, Deborah Grayson, 28, a writer, from Slough, Keyon Bayandor, 25, from Bristol, Debbie Hodge, 45, from Horley, Surrey, and Michael Atkins, 37, from Westbury, Wiltshire are all charged under Section 241 of the Trade Union Labour Relations Act for attempting to stop drivers and other workers from accessing the site.
Atkins is also charged with assaulting a police officer.
Prosecutor Juliet Evans said self-employed computer programmer Atkins, who has just completed a PHD in particle physics at the University of Sussex, is alleged to have thrown a hot cup of tea over an officer.
She said: "At the time the protesters had moved a log across the road and were sitting on it causing an obstruction to the traffic."
Freeston, Grayson and Tobert are alleged to have locked themselves to a fire engine which was driven to the entrance of the London Road site on August 1, Ms Evans said.
Omond, who is the head of charitable giving at cosmetics company Lush, is accused of driving the fire engine into the road, the court heard.
The court was told that Hodge is accused of walking slowly in front of lorries trying to get in and out of the site, impeding their progress, and also telling other people to do the same.
Student Kaity Squires, 19, from Portsmouth, Hampshire, and Zachary Hewitt, 22, from Bexhill, East Sussex, are both charged with assaulting a police officer.
Hewitt is accused of hitting a police officer in the mouth with a placard, the court was told.
Squires is alleged to have punched a police officer in the chest as they tried to arrest Hewitt.
Ms Evans told the court that Squires also claimed she was 14 during a television interview, giving the impression that the police were trying to arrest a young teenager.
Timothy Harris, 29, from Crewkerne, Somerset, is charged with assaulting a police officer and obstructing a police officer.
Ms Evans asked that the case be adjourned so that consideration could be given for how many trials would be needed.
Speaking before the 11th defendant appeared, she said: "There are 10 people before you today and nine bailed until next week.
"The total is currently 48 cases. They all concern different dates but there are a lot of defendants and a lot of overlap."
Magistrates released Freeston, Hewitt, Omond and Squires on conditional bail which bans them from the drilling site.
Atkins, Brown, Bayandor, Grayson, Harrison, Hodge and Tobert were released on unconditional bail.
The case was adjourned for a pre-trial review on October 2 and the defendants were told they did not need to attend.
Meanwhile, the camp outside the Cuadrilla site remained quiet.
About 20 officers stood outside a gate being used by lorries to gain access to the area.
Protesters walked in front of the vehicles as they made their way along London Road.
Activists also began to pack up and leave the Reclaim the Power camp which pitched up in a field on Friday a mile away from the Cuadrilla site.
No Dash For Gas, which organised the camp, said they would continue to support the people of Balcombe and would return to the area in the future, calling the campaign a "marathon" not a "sprint".
Protesters believe the drilling could lead to fracking, which they claim imposes environmental risks including water contamination and small earthquakes.
More than 30 people were arrested during two days action this week, including Green and Brighton Pavilion MP Caroline Lucas.
Nine people have been charged in relation to the protests and will appear in court next month.
Ms Lucas was released on bail and will find out next week whether she will face any charges.
Sussex Police said it was scaling down its operation because many demonstrators had left the area.
A force spokesman said about 120 people are estimated to still be at the roadside camp in London Road by the entrance to the Cuadrilla site, where further deliveries and drilling operations took place today.
He said most people had left the Reclaim The Power camp a mile down the road by midday.
Police used powers under Section 61 of the Criminal Justice and Public Order Act to remove people from a smaller camp to the north of the site, where fireworks and drugs were seized yesterday, and where the landowner reported being threatened when asking the campers to leave voluntarily.
About 20 people were served notice and evicted, with others leaving before being asked, the police spokesman said.
Superintendent Lawrence Hobbs said: "We have known this would be a long-running policing operation and, while we are scaling down tonight, we still expect to need a presence at the site for a number of weeks."
He said many officers and staff had worked longer shifts or cancelled days off.
He added that the force had also called on mutual aid from colleagues elsewhere in the UK, and that using additional resources and extending working days were not steps Sussex Police had taken likely, due to costs and concern for its officers and staff.
Mr Hobbs said the force had achieved its main priority of ensuring safety.
"We will continue to investigate the offences people have been arrested for and our Professional Standards Department will look thoroughly into a small number of complaints received," he said.
"I ask everyone to be mindful of the residents of this small village. When speaking to me and my officers they have outlined a whole range of personal views on the situation, but have been overwhelmingly consistent in saying that whatever the views of others, they do not support criminality in expressing them.
"Four weeks in, many are also growing weary of the impact this high-profile event is having on their right to a peaceful life."
Mr Hobbs said a 38-year-old man was arrested today on suspicion of theft of part of a police uniform, which he was seen wearing. He is currently in custody.